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The Two Careers of Emmy Noether

The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

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Page 1: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

The Two Careers of Emmy Noether

Page 2: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

A notable career in Nineteenth Century Erlangen.

1905 1916

The long Nineteenth Century.

Page 3: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

EN would be remembered today as a woman in mathematics if shehad never done any of the things we remember today.

An unfortunate parallel case:

Mildred Sanderson, 1889–1914.

I Master’s and Ph.D. with L.E. Dickson, Chicago.

I Thesis ”Formal Modular Invariants with Applications toBinary Modular Covariants.”

Page 4: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

EN would be remembered today as a woman in mathematics if shehad never done any of the things we remember today.

An unfortunate parallel case:

Mildred Sanderson, 1889–1914.

I Master’s and Ph.D. with L.E. Dickson, Chicago.

I Thesis ”Formal Modular Invariants with Applications toBinary Modular Covariants.”

Page 5: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

EN would be remembered today as a woman in mathematics if shehad never done any of the things we remember today.

An unfortunate parallel case:

Mildred Sanderson, 1889–1914.

I Master’s and Ph.D. with L.E. Dickson, Chicago.

I Thesis ”Formal Modular Invariants with Applications toBinary Modular Covariants.”

Page 6: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Noether:

I Dissertation 1908 with Gordan.

I Circolo Matematico di Palermo 1908.

I Deutsche Mathematiker-Vereinigung 1909.

I Supervised Hans Falckenberg dissertation 1911 (with E.Schmidt).

Then a different career: different place, different life, and adifferent century in world history and in mathematics.

Page 7: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Noether:

I Dissertation 1908 with Gordan.

I Circolo Matematico di Palermo 1908.

I Deutsche Mathematiker-Vereinigung 1909.

I Supervised Hans Falckenberg dissertation 1911 (with E.Schmidt).

Then a different career: different place, different life, and adifferent century in world history and in mathematics.

Page 8: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Life in Erlangen

Weyl: “There was nothing rebellious in her nature; she was willingto accept conditions as they were.”

Weyl probably heard this from her brother Fritz, and it is probablytrue.

Page 9: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

However, she may have irritated Friedrich Nietzsche when she was5 years old.

Nietzsche, 1887, took meals in the Hotel Alpenrose, Sils Maria,enjoying ”occasional conversations with a Mathematics Professorfrom Erlangen, [Max] Noether, an intelligent Jew.”

He avoided the normal dinner hour: ”the room is hot, too crowded(ca. 100 people, many children), noisy.”

Her lowest grade was “satisfactory,” for practical classroomconduct.

Page 10: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

However, she may have irritated Friedrich Nietzsche when she was5 years old.

Nietzsche, 1887, took meals in the Hotel Alpenrose, Sils Maria,enjoying ”occasional conversations with a Mathematics Professorfrom Erlangen, [Max] Noether, an intelligent Jew.”

He avoided the normal dinner hour: ”the room is hot, too crowded(ca. 100 people, many children), noisy.”

Her lowest grade was “satisfactory,” for practical classroomconduct.

Page 11: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

However, she may have irritated Friedrich Nietzsche when she was5 years old.

Nietzsche, 1887, took meals in the Hotel Alpenrose, Sils Maria,enjoying ”occasional conversations with a Mathematics Professorfrom Erlangen, [Max] Noether, an intelligent Jew.”

He avoided the normal dinner hour: ”the room is hot, too crowded(ca. 100 people, many children), noisy.”

Her lowest grade was “satisfactory,” for practical classroomconduct.

Page 12: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

However, she may have irritated Friedrich Nietzsche when she was5 years old.

Nietzsche, 1887, took meals in the Hotel Alpenrose, Sils Maria,enjoying ”occasional conversations with a Mathematics Professorfrom Erlangen, [Max] Noether, an intelligent Jew.”

He avoided the normal dinner hour: ”the room is hot, too crowded(ca. 100 people, many children), noisy.”

Her lowest grade was “satisfactory,” for practical classroomconduct.

Page 13: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Noether considered her career in Erlangen a success.

She was not a feminist.

A student and friend was, Olga Taussky-Todd:

Page 14: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Noether considered her career in Erlangen a success.

She was not a feminist.

A student and friend was, Olga Taussky-Todd:

Page 15: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Noether considered her career in Erlangen a success.

She was not a feminist.

A student and friend was, Olga Taussky-Todd:

Page 16: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Noether considered her career in Erlangen a success.

She was not a feminist.

A student and friend was, Olga Taussky-Todd:

Page 17: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Even by 1930, Taussky-Todd tells us

I “She said women should not try to work as hard as men.

I She remarked that she, on the whole, only helped young mento obtain positions so they could marry and start families.

I She somehow imagined that all women were supported.”

Page 18: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Even by 1930, Taussky-Todd tells us

I “She said women should not try to work as hard as men.

I She remarked that she, on the whole, only helped young mento obtain positions so they could marry and start families.

I She somehow imagined that all women were supported.”

Page 19: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Even by 1930, Taussky-Todd tells us

I “She said women should not try to work as hard as men.

I She remarked that she, on the whole, only helped young mento obtain positions so they could marry and start families.

I She somehow imagined that all women were supported.”

Page 20: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Even by 1930, Taussky-Todd tells us

I “She said women should not try to work as hard as men.

I She remarked that she, on the whole, only helped young mento obtain positions so they could marry and start families.

I She somehow imagined that all women were supported.”

Page 21: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

The Turn of the Century in Mathematics.

I define these two mathematical centuries in relation tofoundations.

Not (necessarily) formal foundations.

Page 22: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

The Turn of the Century in Mathematics.

I define these two mathematical centuries in relation tofoundations.

Not (necessarily) formal foundations.

Page 23: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

The Turn of the Century in Mathematics.

I define these two mathematical centuries in relation tofoundations.

Not (necessarily) formal foundations.

Page 24: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

A broad consensus as to:

I What mathematics deals with: numbers?

symbols?quantities? sets?

I What do we assume about them at base?

I What questions may legitimately be asked about such entities?

I What counts as a solution? Non-constructive proofs?

Page 25: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

A broad consensus as to:

I What mathematics deals with: numbers? symbols?

quantities? sets?

I What do we assume about them at base?

I What questions may legitimately be asked about such entities?

I What counts as a solution? Non-constructive proofs?

Page 26: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

A broad consensus as to:

I What mathematics deals with: numbers? symbols?quantities?

sets?

I What do we assume about them at base?

I What questions may legitimately be asked about such entities?

I What counts as a solution? Non-constructive proofs?

Page 27: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

A broad consensus as to:

I What mathematics deals with: numbers? symbols?quantities? sets?

I What do we assume about them at base?

I What questions may legitimately be asked about such entities?

I What counts as a solution? Non-constructive proofs?

Page 28: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

A broad consensus as to:

I What mathematics deals with: numbers? symbols?quantities? sets?

I What do we assume about them at base?

I What questions may legitimately be asked about such entities?

I What counts as a solution? Non-constructive proofs?

Page 29: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

A broad consensus as to:

I What mathematics deals with: numbers? symbols?quantities? sets?

I What do we assume about them at base?

I What questions may legitimately be asked about such entities?

I What counts as a solution? Non-constructive proofs?

Page 30: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

A broad consensus as to:

I What mathematics deals with: numbers? symbols?quantities? sets?

I What do we assume about them at base?

I What questions may legitimately be asked about such entities?

I What counts as a solution?

Non-constructive proofs?

Page 31: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

A broad consensus as to:

I What mathematics deals with: numbers? symbols?quantities? sets?

I What do we assume about them at base?

I What questions may legitimately be asked about such entities?

I What counts as a solution? Non-constructive proofs?

Page 32: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Hel Braun’s student-eye view.

Number theory at Frankfurt University 1933. Student of CarlLudwig Siegel. Habilitated Gottingen 1940.

Page 33: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Saw the spread of Gottingen methods:

I “This largely goes back to the algebraists.

I University mathematics became, so to say, more ‘logical.’

I One learns methods and everything is put into a theory.

I Talent is no longer so extremely important.”

“Perhaps I exaggerate but this is the impression I have when Icompare the lectures of that time to later ones.”

Page 34: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Saw the spread of Gottingen methods:

I “This largely goes back to the algebraists.

I University mathematics became, so to say, more ‘logical.’

I One learns methods and everything is put into a theory.

I Talent is no longer so extremely important.”

“Perhaps I exaggerate but this is the impression I have when Icompare the lectures of that time to later ones.”

Page 35: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Saw the spread of Gottingen methods:

I “This largely goes back to the algebraists.

I University mathematics became, so to say, more ‘logical.’

I One learns methods and everything is put into a theory.

I Talent is no longer so extremely important.”

“Perhaps I exaggerate but this is the impression I have when Icompare the lectures of that time to later ones.”

Page 36: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Saw the spread of Gottingen methods:

I “This largely goes back to the algebraists.

I University mathematics became, so to say, more ‘logical.’

I One learns methods and everything is put into a theory.

I Talent is no longer so extremely important.”

“Perhaps I exaggerate but this is the impression I have when Icompare the lectures of that time to later ones.”

Page 37: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Saw the spread of Gottingen methods:

I “This largely goes back to the algebraists.

I University mathematics became, so to say, more ‘logical.’

I One learns methods and everything is put into a theory.

I Talent is no longer so extremely important.”

“Perhaps I exaggerate but this is the impression I have when Icompare the lectures of that time to later ones.”

Page 38: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Or again:

I “Still in my student days university mathematics restedstrongly on mathematical talent.

I Logic and notation were not so well established.

“The days are gone when one affectionately described one’sprofessor with ‘He said A, wrote B, meant C, and D is correct’...”

Page 39: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Or again:

I “Still in my student days university mathematics restedstrongly on mathematical talent.

I Logic and notation were not so well established.

“The days are gone when one affectionately described one’sprofessor with ‘He said A, wrote B, meant C, and D is correct’...”

Page 40: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Or again:

I “Still in my student days university mathematics restedstrongly on mathematical talent.

I Logic and notation were not so well established.

“The days are gone when one affectionately described one’sprofessor with ‘He said A, wrote B, meant C, and D is correct’...”

Page 41: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Or again:

I “Still in my student days university mathematics restedstrongly on mathematical talent.

I Logic and notation were not so well established.

“The days are gone when one affectionately described one’sprofessor with ‘He said A, wrote B, meant C, and D is correct’...”

Page 42: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Compare Max and Emmy Noether on Paul Gordan:

I His lectures rested less on deep knowledge of other’s works –since he read them very little –

I than on an instinctive feel for the ways and goals ofmathematical efforts. . . .

I He never did justice to developing concepts from thefundamentals (Grundlagen gehenden Begriffsentwicklungen).

I His lectures entirely avoided fundamental conceptualdefinitions, even such as limit.

I His lectures rested on lively expression and the power gainedfrom his own studies, rather than on logic and rigor(Systematik und Strenge).

Page 43: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Compare Max and Emmy Noether on Paul Gordan:

I His lectures rested less on deep knowledge of other’s works –since he read them very little –

I than on an instinctive feel for the ways and goals ofmathematical efforts. . . .

I He never did justice to developing concepts from thefundamentals (Grundlagen gehenden Begriffsentwicklungen).

I His lectures entirely avoided fundamental conceptualdefinitions, even such as limit.

I His lectures rested on lively expression and the power gainedfrom his own studies, rather than on logic and rigor(Systematik und Strenge).

Page 44: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Compare Max and Emmy Noether on Paul Gordan:

I His lectures rested less on deep knowledge of other’s works –since he read them very little –

I than on an instinctive feel for the ways and goals ofmathematical efforts. . . .

I He never did justice to developing concepts from thefundamentals (Grundlagen gehenden Begriffsentwicklungen).

I His lectures entirely avoided fundamental conceptualdefinitions, even such as limit.

I His lectures rested on lively expression and the power gainedfrom his own studies, rather than on logic and rigor(Systematik und Strenge).

Page 45: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Compare Max and Emmy Noether on Paul Gordan:

I His lectures rested less on deep knowledge of other’s works –since he read them very little –

I than on an instinctive feel for the ways and goals ofmathematical efforts. . . .

I He never did justice to developing concepts from thefundamentals (Grundlagen gehenden Begriffsentwicklungen).

I His lectures entirely avoided fundamental conceptualdefinitions, even such as limit.

I His lectures rested on lively expression and the power gainedfrom his own studies, rather than on logic and rigor(Systematik und Strenge).

Page 46: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Compare Max and Emmy Noether on Paul Gordan:

I His lectures rested less on deep knowledge of other’s works –since he read them very little –

I than on an instinctive feel for the ways and goals ofmathematical efforts. . . .

I He never did justice to developing concepts from thefundamentals (Grundlagen gehenden Begriffsentwicklungen).

I His lectures entirely avoided fundamental conceptualdefinitions, even such as limit.

I His lectures rested on lively expression and the power gainedfrom his own studies, rather than on logic and rigor(Systematik und Strenge).

Page 47: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Compare Max and Emmy Noether on Paul Gordan:

I His lectures rested less on deep knowledge of other’s works –since he read them very little –

I than on an instinctive feel for the ways and goals ofmathematical efforts. . . .

I He never did justice to developing concepts from thefundamentals (Grundlagen gehenden Begriffsentwicklungen).

I His lectures entirely avoided fundamental conceptualdefinitions, even such as limit.

I His lectures rested on lively expression and the power gainedfrom his own studies, rather than on logic and rigor(Systematik und Strenge).

Page 48: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Does Emmy Noether use limits in “formale Variationsrechnung,” inher famous paper on conservation theorems?

Not obvious.

Page 49: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Does Emmy Noether use limits in “formale Variationsrechnung,” inher famous paper on conservation theorems?

Not obvious.

Page 50: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Does Emmy Noether use limits in “formale Variationsrechnung,” inher famous paper on conservation theorems?

Not obvious.

Page 51: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

The extreme difficulty of reading her dissertation.

Computational algebraists Rebecca and Luis Garcia, Sam HoustonState University.

Page 52: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

The extreme difficulty of reading her dissertation.

Computational algebraists Rebecca and Luis Garcia, Sam HoustonState University.

Page 53: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

The eulogy of Gordan

I “He compiled volumes of formulas, very well ordered butproviding a minimum of text.

I His mathematical friends undertook to prepare the text forpress. . . .

I They could not always produce a fully correct conception.”

“Only a few of his publications, and especially the earliest, expressGordan’s specific style: bare, brief, direct, uninterrupted theoremsone after the other.”

Page 54: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Noether was comfortable with this.

She would call a claim well known if someone she knew, knew it.

Page 55: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Noether was comfortable with this.

She would call a claim well known if someone she knew, knew it.

Page 56: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Noether 1916 uses a “well known” fact on polarized symmetricpolynomials.

She gives two footnotes to this well known fact on one page.

Neither footnote cites a proof.

One footnote refers to the other.

Page 57: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Noether 1916 uses a “well known” fact on polarized symmetricpolynomials.

She gives two footnotes to this well known fact on one page.

Neither footnote cites a proof.

One footnote refers to the other.

Page 58: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Noether 1916 uses a “well known” fact on polarized symmetricpolynomials.

She gives two footnotes to this well known fact on one page.

Neither footnote cites a proof.

One footnote refers to the other.

Page 59: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Noether 1916 uses a “well known” fact on polarized symmetricpolynomials.

She gives two footnotes to this well known fact on one page.

Neither footnote cites a proof.

One footnote refers to the other.

Page 60: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Life in Gottingen.

No need to linger on WW I.

Pro-soviet socialism.

Page 61: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Life in Gottingen.

No need to linger on WW I.

Pro-soviet socialism.

Page 62: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Life in Gottingen.

No need to linger on WW I.

Pro-soviet socialism.

Page 63: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Weyl has her “period of relative dependence” extend to 1919 –first on Gordan, then on Hilbert.

Page 64: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

This is fair in the sense that she let Gordan, Fischer, andKlein-Hilbert set her problems.

But not her methods.

Page 65: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

This is fair in the sense that she let Gordan, Fischer, andKlein-Hilbert set her problems.

But not her methods.

Page 66: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Her “method” circa 1915–1918:

state each probem as simply aspossible, it will solve itself.

And Noether never claimed independence: “It is all already inDedekind.”

What she saw in Dedekind – as she saw conservation laws in Lie.

Page 67: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Her “method” circa 1915–1918: state each probem as simply aspossible, it will solve itself.

And Noether never claimed independence: “It is all already inDedekind.”

What she saw in Dedekind – as she saw conservation laws in Lie.

Page 68: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Her “method” circa 1915–1918: state each probem as simply aspossible, it will solve itself.

And Noether never claimed independence:

“It is all already inDedekind.”

What she saw in Dedekind – as she saw conservation laws in Lie.

Page 69: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Her “method” circa 1915–1918: state each probem as simply aspossible, it will solve itself.

And Noether never claimed independence: “It is all already inDedekind.”

What she saw in Dedekind – as she saw conservation laws in Lie.

Page 70: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Her “method” circa 1915–1918: state each probem as simply aspossible, it will solve itself.

And Noether never claimed independence: “It is all already inDedekind.”

What she saw in Dedekind – as she saw conservation laws in Lie.

Page 71: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Twentieth Century Mathematics according to Noether

Build a community around Dedekind’s achievements.

Page 72: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Twentieth Century Mathematics according to Noether

Build a community around Dedekind’s achievements.

Page 73: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

I What does mathematics deal with?

I Dedekind: integers, real and complex numbers, sets.I Noether defers to her friend Zermelo.

I What do we assume about them at base?I Dedekind in print: standard analysis.I Noether(and Dedekind in notes) stated algebraic axioms.

I What questions may legitimately be asked about suchentities? Structural relations.

I What counts as a solution? Homomorphism and isomorphismtheorems.

Those are not the only solutons allowed in principle, of course.They are the preferred means of solution for Dedekind andNoether.

Page 74: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

I What does mathematics deal with?

I Dedekind: integers, real and complex numbers, sets.

I Noether defers to her friend Zermelo.

I What do we assume about them at base?I Dedekind in print: standard analysis.I Noether(and Dedekind in notes) stated algebraic axioms.

I What questions may legitimately be asked about suchentities? Structural relations.

I What counts as a solution? Homomorphism and isomorphismtheorems.

Those are not the only solutons allowed in principle, of course.They are the preferred means of solution for Dedekind andNoether.

Page 75: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

I What does mathematics deal with?

I Dedekind: integers, real and complex numbers, sets.I Noether defers to her friend Zermelo.

I What do we assume about them at base?I Dedekind in print: standard analysis.I Noether(and Dedekind in notes) stated algebraic axioms.

I What questions may legitimately be asked about suchentities? Structural relations.

I What counts as a solution? Homomorphism and isomorphismtheorems.

Those are not the only solutons allowed in principle, of course.They are the preferred means of solution for Dedekind andNoether.

Page 76: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

I What does mathematics deal with?

I Dedekind: integers, real and complex numbers, sets.I Noether defers to her friend Zermelo.

I What do we assume about them at base?

I Dedekind in print: standard analysis.I Noether(and Dedekind in notes) stated algebraic axioms.

I What questions may legitimately be asked about suchentities? Structural relations.

I What counts as a solution? Homomorphism and isomorphismtheorems.

Those are not the only solutons allowed in principle, of course.They are the preferred means of solution for Dedekind andNoether.

Page 77: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

I What does mathematics deal with?

I Dedekind: integers, real and complex numbers, sets.I Noether defers to her friend Zermelo.

I What do we assume about them at base?I Dedekind in print: standard analysis.

I Noether(and Dedekind in notes) stated algebraic axioms.

I What questions may legitimately be asked about suchentities? Structural relations.

I What counts as a solution? Homomorphism and isomorphismtheorems.

Those are not the only solutons allowed in principle, of course.They are the preferred means of solution for Dedekind andNoether.

Page 78: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

I What does mathematics deal with?

I Dedekind: integers, real and complex numbers, sets.I Noether defers to her friend Zermelo.

I What do we assume about them at base?I Dedekind in print: standard analysis.I Noether(and Dedekind in notes) stated algebraic axioms.

I What questions may legitimately be asked about suchentities? Structural relations.

I What counts as a solution? Homomorphism and isomorphismtheorems.

Those are not the only solutons allowed in principle, of course.They are the preferred means of solution for Dedekind andNoether.

Page 79: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

I What does mathematics deal with?

I Dedekind: integers, real and complex numbers, sets.I Noether defers to her friend Zermelo.

I What do we assume about them at base?I Dedekind in print: standard analysis.I Noether(and Dedekind in notes) stated algebraic axioms.

I What questions may legitimately be asked about suchentities?

Structural relations.

I What counts as a solution? Homomorphism and isomorphismtheorems.

Those are not the only solutons allowed in principle, of course.They are the preferred means of solution for Dedekind andNoether.

Page 80: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

I What does mathematics deal with?

I Dedekind: integers, real and complex numbers, sets.I Noether defers to her friend Zermelo.

I What do we assume about them at base?I Dedekind in print: standard analysis.I Noether(and Dedekind in notes) stated algebraic axioms.

I What questions may legitimately be asked about suchentities? Structural relations.

I What counts as a solution? Homomorphism and isomorphismtheorems.

Those are not the only solutons allowed in principle, of course.They are the preferred means of solution for Dedekind andNoether.

Page 81: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

I What does mathematics deal with?

I Dedekind: integers, real and complex numbers, sets.I Noether defers to her friend Zermelo.

I What do we assume about them at base?I Dedekind in print: standard analysis.I Noether(and Dedekind in notes) stated algebraic axioms.

I What questions may legitimately be asked about suchentities? Structural relations.

I What counts as a solution?

Homomorphism and isomorphismtheorems.

Those are not the only solutons allowed in principle, of course.They are the preferred means of solution for Dedekind andNoether.

Page 82: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

I What does mathematics deal with?

I Dedekind: integers, real and complex numbers, sets.I Noether defers to her friend Zermelo.

I What do we assume about them at base?I Dedekind in print: standard analysis.I Noether(and Dedekind in notes) stated algebraic axioms.

I What questions may legitimately be asked about suchentities? Structural relations.

I What counts as a solution? Homomorphism and isomorphismtheorems.

Those are not the only solutons allowed in principle, of course.They are the preferred means of solution for Dedekind andNoether.

Page 83: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

I What does mathematics deal with?

I Dedekind: integers, real and complex numbers, sets.I Noether defers to her friend Zermelo.

I What do we assume about them at base?I Dedekind in print: standard analysis.I Noether(and Dedekind in notes) stated algebraic axioms.

I What questions may legitimately be asked about suchentities? Structural relations.

I What counts as a solution? Homomorphism and isomorphismtheorems.

Those are not the only solutons allowed in principle, of course.They are the preferred means of solution for Dedekind andNoether.

Page 84: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

The growth of mathemtics, and the rise of more uniformstandards, both required and permitted profusion ot textbooks.

Hel Braun: “Springer books freed students from the Lesezimmer.”

Precursor: Weber Lehrbuch der Algebra: kleine Ausgabe in einemBande 1912.

A symptom of Noether’s closeness to this: It is easy today to get arather close replica of her MA articles in LATEX, as it has fontsclosely based on Springer-Verlag of the time.

Page 85: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

The growth of mathemtics, and the rise of more uniformstandards, both required and permitted profusion ot textbooks.

Hel Braun: “Springer books freed students from the Lesezimmer.”

Precursor: Weber Lehrbuch der Algebra: kleine Ausgabe in einemBande 1912.

A symptom of Noether’s closeness to this: It is easy today to get arather close replica of her MA articles in LATEX, as it has fontsclosely based on Springer-Verlag of the time.

Page 86: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

The growth of mathemtics, and the rise of more uniformstandards, both required and permitted profusion ot textbooks.

Hel Braun: “Springer books freed students from the Lesezimmer.”

Precursor: Weber Lehrbuch der Algebra: kleine Ausgabe in einemBande 1912.

A symptom of Noether’s closeness to this: It is easy today to get arather close replica of her MA articles in LATEX, as it has fontsclosely based on Springer-Verlag of the time.

Page 87: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

The growth of mathemtics, and the rise of more uniformstandards, both required and permitted profusion ot textbooks.

Hel Braun: “Springer books freed students from the Lesezimmer.”

Precursor: Weber Lehrbuch der Algebra: kleine Ausgabe in einemBande 1912.

A symptom of Noether’s closeness to this: It is easy today to get arather close replica of her MA articles in LATEX, as it has fontsclosely based on Springer-Verlag of the time.

Page 88: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Bourbaki

“It is true that there were already excellent monographs at thetime and, in fact, the Bourbaki treatise was modeled in thebeginning on the excellent algebra treatise of Van der Waerden.

I have no wish to detract from his merit, but as you know, hehimself says in his preface that really his treatise had severalauthors, including E. Noether and E. Artin,

so that it was a bit of an early Bourbaki.”

Page 89: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Bourbaki

“It is true that there were already excellent monographs at thetime and, in fact, the Bourbaki treatise was modeled in thebeginning on the excellent algebra treatise of Van der Waerden.

I have no wish to detract from his merit, but as you know, hehimself says in his preface that really his treatise had severalauthors, including E. Noether and E. Artin,

so that it was a bit of an early Bourbaki.”

Page 90: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Bourbaki

“It is true that there were already excellent monographs at thetime and, in fact, the Bourbaki treatise was modeled in thebeginning on the excellent algebra treatise of Van der Waerden.

I have no wish to detract from his merit, but as you know, hehimself says in his preface that really his treatise had severalauthors, including E. Noether and E. Artin,

so that it was a bit of an early Bourbaki.”

Page 91: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Bourbaki

“It is true that there were already excellent monographs at thetime and, in fact, the Bourbaki treatise was modeled in thebeginning on the excellent algebra treatise of Van der Waerden.

I have no wish to detract from his merit, but as you know, hehimself says in his preface that really his treatise had severalauthors, including E. Noether and E. Artin,

so that it was a bit of an early Bourbaki.”

Page 92: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Norbert Schappacher objects strongly that all my sources areunreliable and have their own agendas. He and I agree the same istrue of Weyl. We both like Alexandroff on Noether, but you canhardly avoid saying the same of him.

Page 93: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

However:

I What I quote from Braun is clearly true. She just puts it well.

I Indeed Gordan is an extreme case, but so was Poincare, and Icould as well cite Lie or Klein as examples that I know. Idoubt many less known professors were very much more likeWeierstrass than these were.

I Norbert tells me Cordula Tollmien has found that MaxNoether resented Gordan for making him do a lot of work inGordan’s name.

I Far from disqualifying him as a source, this makes it morelikely than I had thought before, that Max was one of thosewho wrote proofs for Gordan without understanding them.

Page 94: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

I What personal agenda would lead Taussky-Todd to sayNoether would not recommend women for jobs?

I Most likely, that Noether said exactly this to her, in decliningto recommend her.

I No one says Noether did attend the women’s group meetingat the ICM 1932. Noether talked at that ICM. Taussky-oddsays she told Noether about the meeting and Noetherendorsed it in principle without attending.

I Why would Taussky-Todd make up that Noether said womenshould not try to work as hard as men?

I Can we believe it was resentment over Noether’s methods innumber theory? Or should we rather believe Taussky-Toddresented Noether saying things just like this?

Page 95: The Two Careers of Emmy Noether - Aarhus UniversitetThe Two Careers of Emmy Noether. A notable career in Nineteenth Century Erlangen. 1905 1916 The long Nineteenth Century. EN would

Saunders Mac Lane did not call himself a friend, but a student. Hesays he did not understand her lectures. Should we dismiss this asa late reconstructed memory? Or should we rather say he – whoselater work would in fact utterly reorganize the material that heheard her lecture on – had a more demanding sense of“understanding” the material than most people would?