10
votes
1answer
247 views
Distinguishing 3-manifolds by homologies of covers
In a blog post on ldtopology, a recent arxiv posting of Lins-Lins is discussed. The main argument of that paper is difficult to algorithmically distinguish two 3-manifolds and to t …
1
vote
1answer
55 views
construct Seifert fibration on mapping torus of surface with monodromy a periodic mapping class
How do we construct Seifert fibration on mapping torus of surface with monodromy a periodic mapping class. I know that the fiber of the Seifert fibration has to be transverse to t …
8
votes
1answer
108 views
Isotopy classes on the disk and mapping tori
Is the following true?
"The conjugacy classes of two homeomorphisms of the n-times punctured disk have isotopic representatives iff the associated mapping tori are homeomorphic."
…
6
votes
2answers
261 views
Do different Dehn fillings produce homeomorphic 3-manifolds ?
Hi, everyone. I am interested in the dehn filling and Hyperbolic 3-manifold.
Suppose M be an orientable compact 3-manifold with one torus boundary and int(M) admit a
hyperbolic …
5
votes
1answer
163 views
When are isometry groups of hyperbolic 3-manifolds finite?
If $M$ is a finite volume hyperbolic 3-manifold, then its isometry group is finite. I believe this is also true for geometrically finite 3-manifolds. What is the most general condi …
13
votes
1answer
310 views
Can the SL_2 character variety of a three-manifold be nonreduced?
Let $M^3$ be a three-manifold and consider the representation variety and the character variety of $M$:
$$Y=\operatorname{Hom}(\pi_1(M^3),\operatorname{SL}(2,\mathbb C))$$
$$X=\ope …
1
vote
0answers
52 views
Categorification of WRT invariants of integral homology spheres
First, I would like to know how many definitions are there for categorification of WRT invariants. In addition, I wonder if the categorified version of WRT invariants have been exp …
5
votes
0answers
229 views
A conjecture of Thurston and possibly Weeks too
What is the status of the following conjecture:
"... [w]hen the shortest simple closed geodesics are repeatedly removed from any complete hyperbolic 3-manifold of finite volume …
18
votes
2answers
195 views
Hyperbolic exceptional fillings of cusped hyperbolic 3-manifolds
Thurston's Hyperbolic Dehn Surgery Theorem says that all but finitely many fillings of a cusp of a hyperbolic 3-manifold result in hyperbolic manifolds that are deformations of the …
2
votes
1answer
97 views
Once punctured torus bundles in snappy/twister
I have been trying to learn about snappy's method for encoding once-punctured torus bundles (http://www.math.uic.edu/t3m/SnapPy/manifold.html#snappy.Manifold). As you can see from …
7
votes
2answers
178 views
Non-tame 3-manifolds covered by the Euclidean space
An open 3-manifold is tame if it is homeomorphic to the interior of a compact manifold. Is there a (known) example of an open 3-manifold that is not tame, has finitely generated fu …
5
votes
1answer
199 views
integer surgeries on knots
I have constructed a list of surgery coefficients which yield spherical space forms. For instance, there are two knots with different Alexander polynomials on which 29-surgery will …
5
votes
1answer
248 views
Hyperbolic 3-manifolds with no geometrically finite structure
Does there exist a compact hyperbolic 3-manifold $M$ that is not diffeomorphic to a geometrically finite hyperbolic manifold? If yes, can such $M$ have incompressible boundary?
I …
4
votes
2answers
181 views
Hyperbolic Brunnian links and rectangular cusp shapes
My question is as follows.
Does every hyperbolic Brunnian link have rectangular cusp shapes on all its components?
Here is what I mean:
The Borromean rings form a famous lin …
2
votes
2answers
206 views
The knot whose complement is the Hantzsche-Wendt manifold
Can someone identify the knot whose complement in $\mathbb{S}^{3}$ will produce the Hantzsche-Wendt manifold?
Thanks

