HW

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Name HW
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Questions
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Can a connected planar compactum minus a point be totally disconnected?

feb 28 10 at 0:28 Jonas Meyer 4,822●1●21●31

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3

8

3
13
votes
2
answers
436
views

A space of ideals

mar 26 12 at 20:02 Yves Cornulier 2,926●1●6●11

4
9
votes
1
answer
221
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Factoring maps of handlebodies

nov 19 09 at 17:48 Sam Nead 5,302●12●26

2
6
votes
4
answers
306
views

Examples of acylindrical 3-manifolds

jun 5 at 14:56 Richard Kent 8,525●2●29●58

 

143

Answers
votes newest views recent
27
What are some of the big open problems in 3-manifold theory?
23
What are your favorite instructional counterexamples?
23
Primes occurring as orders of elements of a finitely presented group
22
Mapping from a finite index subgroup onto the whole group
20
〈x,y : x^p = y^p = (xy)^p = 1〉
19
finite generated group realized as fundamental group of manifolds
18
Fundamental groups of closed hyperbolic 3-manifolds are freely indecomposable
15
Can a group be a universal Turing machine?
15
A single paper everyone should read?
14
Fundamental group of 3-manifold with boundary
13
Most interesting mathematics mistake?
13
How helpful is non-standard analysis?
13
Groups surjecting onto a free group
13
When is a extension of $\mathbb{Z}$ by a free group a CAT(0) group?
12
Judging whether a finitely presented group is a 3-manifold group?
12
does every right-angled coxeter group have a right-angled artin group as a subgroup of finite index?
11
Classification problem for non-compact manifolds
11
Finitely generated subgroups with infinite cyclic quotient
11
Does every retraction of free groups arise from projection to a subset of a freely generating set?
11
When is a finitely generated group finitely presented?
11
residually finite groups with the same finite quotients
11
Is it decidable whether or not a collection of integer matrices generates a free group?
10
When is an HNN extension a free group?
10
Is residual finiteness a profinite property?
10
Recognizing the 4-sphere and the Adjan--Rabin theorem
10
Finding hyperbolic metrics by approximation
10
Applications of the notion of of Gromov-Hausdorff distance
10
fundamental groups of surfaces
10
Finitely generated subgroups of a product of free groups
10
Examples of 3-manifolds with RFRS fundamental group
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