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What does each AMS package do?What does each AMS package do?

In my view, any document with a substantial amount of mathematics should load the packages

from AMS-TeX. Hence, most of my document's preambles contain

\usepackage{amsmath, amsthm, amssymb, amsfonts}

(I could add to that the non-AMS , etc.). What do each of those packages do? Do I

really need to list all of them, or do some of them load others? In particular, does any package

load all of them, so that I can simply type

mathtools

\usepackage{ams-everything}

shorter than the current list?

{packages} {amsmath}

asked Oct 20 '11 at 1:46

Bruno Le Floch

18.6k2 51 107

2 loads .amssymb amsfonts Gonzalo Medina Oct 20 '11 at 2:13

2 Answers

Most of the answer was extracted from the sections of the documentation of

and :

Introduction

amsmath amsthm

1. provides miscellaneous enhancements for improving the information

structure and printed output of documents containing mathematical formulas. Some of

the features provided by this package are:

amsmath

The command (through the auxiliary package ) to

define new "operator name" commands analogous to and , including

proper side spacing and automatic selection of the correct font style and size (even

when used in sub- or superscripts).

\DeclareMathOperator amsopn

\sin \lim

Multiple substitutes for the environment to make various kinds of

equation arrangements easier to write.

eqnarray

Equation numbers automatically adjust up or down to avoid overprinting on theequation contents (unlike ).eqnarray

Spacing around equals signs matches the normal spacing in the

environment (unlike ).

equation

eqnarray

A way to produce multiline subscripts as are often used with summation or product

symbols.

An easy way to substitute a variant equation number for a given equation instead

of the automatically supplied number.

An easy way to produce subordinate equation numbers of the form (1.3a) (1.3b)
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(1.3c) for selected groups of equations.

The command (through the auxiliary package ) for typesetting a

fragment of text inside a display.

\text amstext

2. helps to define theorem-like structures; the introduction to the documentation

gives a nice concise description of the package:

amsthm

The package provides an enhanced version of LaTeX's

command for defining theorem-like environments. The enhancedrecognizes a specification (as in Mittelbach's package) and

has a form for defining unnumbered environments. The package also

defines a environment that automatically adds a QED symbol at the end. AMS

document classes incorporate the package, so everything described here

applies to them as well.

amsthm \newtheorem

\newtheorem\theoremstyle theorem

* amsthm

proof

amsthm

If the package is used with a non-AMS document class and with the

package, must be loaded after , not before.

amsthm amsmath

amsthm amsmath

3. provides an extended symbol collection. For example, after loading

you have the following additional binary relation symbols: , ,, , , , (and many more), the arrow ,

and some other symbols such as and . Another useful feature is the

command to produce blackboard bold characters

amssymb amssymb

\barwedge \boxdot

\boxminus \boxplus \boxtimes \Cap \Cup \leadsto

\Box \Diamond

\mathbb

Since internally loads , it's enough to load the former.amssymb amsfonts

s far as I know, there's not a single package loading , , and so all

hree of them will have to be loaded when using the standard classes ( , ,

).

amsmath amsthm amssymb

book report

article

If one of the document classes of the AMS-collection ( , ) is being used,

here's no need to load , or ; will have to be explicitly loaded.

amsbook amsart

amsmath amsthm amssymb

edited Oct 20 '11 at 11:25

barbara beeton

18.3k 1 31 80

answered Oct 20 '11 at 2:50

Gonzalo Medina

117k 9 259 41

also defines andamsmath \eqref \tag Seamus Oct 20 '11 at 11:32

Here is the package dependency hierarchy in terms of the :AMS-LaTeX bundle

amsmath

amstext

amsgen*

amsbsy

amsgen*

amsopn

amsgen*

amssymb

*

chat with an expertnot now

never
http://ctan.org/pkg/amsfontshttp://ctan.org/pkg/amssymbhttp://mirrors.ctan.org/macros/latex/required/amslatex/math/amsgen.styhttp://ctan.org/pkg/amsopnhttp://mirrors.ctan.org/macros/latex/required/amslatex/math/amsgen.styhttp://ctan.org/pkg/amsbsyhttp://mirrors.ctan.org/macros/latex/required/amslatex/math/amsgen.styhttp://ctan.org/pkg/amstexthttp://ctan.org/pkg/amsmathhttp://www.ctan.org/pkg/amslatexhttp://tex.stackexchange.com/questions/32100/what-does-each-ams-package-do#comment63368_32102http://tex.stackexchange.com/users/215/seamushttp://tex.stackexchange.com/users/3954/gonzalo-medinahttp://tex.stackexchange.com/users/579/barbara-beetonhttp://tex.stackexchange.com/posts/32102/revisions


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amsthm

amsfonts*

t the moment, there exists no (say) package that would load the entire

bundle.

ams-all

This package has no dependencies.

answered Oct 20 '11 at 2:55Werner

112k 6 200 41

Nice and concise answer. Bruno Le Floch Oct 20 '11 at 5:33
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