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yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

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Page 1: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

1

Page 2: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

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Page 3: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold
Page 4: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

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Page 5: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

Remark :These links are related by mutation.

Page 6: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold
Page 7: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

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Page 8: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

8 0

ɤ1(0)

ɤ₂(0)

Page 9: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

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Page 10: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

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Page 11: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

horoball pattern

11

0

1

Page 12: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

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Page 13: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

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Page 14: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

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Page 15: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

example

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Page 16: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

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Page 17: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

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Page 18: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

translations meridian -0.2131624 + i 1.3579 longitude 18.19998 Volume 24.4323 Cusp volume 12.3568787�

 

18

Page 19: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

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Page 20: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

20

totally geodesic fourth punctured spheres

Page 21: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

blue cusp

red cusp

regular ideal octahedron

Page 22: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

upper half space model では

1

Page 23: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

blue (light blue) cusp

red(pink) cusp

Page 24: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

red cusp

blue cusp

S

T1

T2 T3 S’

S

T1

T2 T3 S’ T3 T2 T1

Page 25: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

red cusp

blue cusp

S

T1

T2 T3 S’

S

T1

T2 T3 S’ T3 T2 T1

T1 S T2 T3 S’ T3 T2 T1

Page 26: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

red cusp

blue cusp

S

T1

T2 T3 S’

S

T1

T2 T3 S’ T3 T2 T1

T1 S T2 T3 S’ T3 T2 T1

Page 27: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

blue cusp red cusp

∞を中心とするhoroballの高さが1となるようにする.

高さ0.6のhoroball

高さ1のhoroball

Page 28: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

blue cusp red cusp

∞を中心とするhoroballの高さが1となるようにする.

高さ0.6のhoroball

Page 29: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

blue cusp

S T1 T2 T3 T3 T2 T1 S’

29

S T1 T2 T3 S’

高さ1のhoroball

T3 S T1 T2 T3 T2 T1 S’

red cusp(高さ0.6以上)

Page 30: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

red cusp

S T1 T2 T3 S’

blue cusp

S T1 T2 T3 T3 T2 T1 S’ 高さ1のhoroball

30

S T1 T2 T3 T2 T1 S’ T3

Page 31: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

L1とL2のhoroball pattern(高さ1のみ)

31 horoball pattern が異なるので incommensurable

Page 32: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

32

Page 33: yosida han - Nihon UniversityMO s. t. Ml MO finite cover, M2 MO finite cover Discrete Subgroups of Semi-simple Lie Groups, Ergeb. der Math. 17 Springer-Verlag (1989). hyperbolic manifold

ご清聴ありがとうございました.