User Sam Nead

4 votes

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Lamination as limit of arcs

answered Nov 14, 2015 at 19:10

4 votes

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Haken's Lemma for Essential Tori

answered Nov 2, 2016 at 0:15

4 votes

Uniformizations of the bordered/punctured Riemann surfaces

answered Nov 15, 2016 at 2:04

4 votes

Area method in Lobachevskian geometry

answered Oct 25, 2019 at 12:02

4 votes

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Arcs and elements of the mapping class group

answered Dec 30, 2019 at 7:57

4 votes

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SnapPy isometry routine

answered Apr 18, 2019 at 4:37

4 votes

Presentations of mapping class groups in dimension $3$

answered May 22, 2021 at 7:37

4 votes

Decidability of knot equivalence in general 3-manifolds? Surface equivalence?

answered Apr 7, 2021 at 17:35

4 votes

Can a hyperbolic three-manifold have 𝑛 toric boundary components?

answered Apr 14, 2021 at 18:07

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Hyperbolic length of curve that does not enter a collar

answered Dec 6, 2020 at 10:33

4 votes

Proof for rotation number $\operatorname{rot}(K) = \sum \limits_C \omega_C(K) - \sum \limits_p \operatorname{ind}_p(K)$?

answered Nov 19, 2021 at 9:01

4 votes

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Is action of MCG on the curve complex computable for closed surfaces? [Yes: Birman Exact Sequence]

answered Dec 21, 2021 at 23:21

4 votes

Quadratic cusp shape

answered Sep 18, 2021 at 20:12

4 votes

Theorems with many distinct proofs

answered Aug 12, 2021 at 16:13

4 votes

Birman-Series for variable negative curvature

answered Jul 16, 2021 at 8:14

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Universal covers of non-prime 3-manifolds

answered Mar 31, 2022 at 2:27

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“Combinatorial” moves between cell complexes

answered Apr 17, 2022 at 4:27

4 votes

Decision problems for which it is unknown whether they are decidable

answered Jan 18, 2022 at 11:38

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Volume of hyperbolic 3-manifolds with toroidal boundary

answered Jan 28, 2022 at 20:50

4 votes

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Are the determinants of a lattice discrete?

answered Jul 12, 2022 at 12:30

4 votes

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Area of fundamental domain of Fuchsian group and index of a Fuchsian group in the triangle group

answered Aug 25, 2022 at 10:58

4 votes

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Parabolic elements and hyperbolic elements in SL(2,R)

answered Aug 9, 2022 at 8:23

4 votes

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Space filling curves

answered Aug 7, 2022 at 9:52

4 votes

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Reference for triangle groups

answered Aug 27, 2022 at 15:08

4 votes

"Thickening" an arc on a 2-manifold

answered Aug 29, 2022 at 23:28

4 votes

Topology of the moduli space of a 2-dim closed surface

answered Jan 20, 2023 at 19:33

4 votes

Maps of surfaces to CAT(0) cube complexes

answered Feb 16, 2023 at 12:19

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Links and non-orientable surfaces

answered Dec 4, 2022 at 22:37

4 votes

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Determine if a closed braid is a link/unlink

answered Oct 9, 2022 at 12:58

4 votes

Bandwidth of finite groups

answered Oct 31, 2022 at 0:35

Stack Exchange Network

501 Answers

Lamination as limit of arcs

Haken's Lemma for Essential Tori

Uniformizations of the bordered/punctured Riemann surfaces

Area method in Lobachevskian geometry

Arcs and elements of the mapping class group

SnapPy isometry routine

Presentations of mapping class groups in dimension $3$

Decidability of knot equivalence in general 3-manifolds? Surface equivalence?

Can a hyperbolic three-manifold have 𝑛 toric boundary components?

Hyperbolic length of curve that does not enter a collar

Proof for rotation number $\operatorname{rot}(K) = \sum \limits_C \omega_C(K) - \sum \limits_p \operatorname{ind}_p(K)$?

Is action of MCG on the curve complex computable for closed surfaces? [Yes: Birman Exact Sequence]

Quadratic cusp shape

Theorems with many distinct proofs

Birman-Series for variable negative curvature

Universal covers of non-prime 3-manifolds

“Combinatorial” moves between cell complexes

Decision problems for which it is unknown whether they are decidable

Volume of hyperbolic 3-manifolds with toroidal boundary

Are the determinants of a lattice discrete?

Area of fundamental domain of Fuchsian group and index of a Fuchsian group in the triangle group

Parabolic elements and hyperbolic elements in SL(2,R)

Space filling curves

Reference for triangle groups

"Thickening" an arc on a 2-manifold

Topology of the moduli space of a 2-dim closed surface

Maps of surfaces to CAT(0) cube complexes

Links and non-orientable surfaces

Determine if a closed braid is a link/unlink

Bandwidth of finite groups