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Jul
31
comment Computation Time of Smith Normal Form in Maple
For any large (and important) computation, you should consider checking multiple CAS's against each other. Eg Mathematica and Sage in addition to Maple.
Jul
25
comment Your favorite papers on geometric group theory
Note that the poster is not asking for the "best" papers, but rather for suggestions of "favorite" papers. I'm very interested in hearing what the experts have to say!
Jul
21
comment Is the family of probabilities generated by a random walk on a finitely generated amenable group asymptotically invariant?
Can you edit the post? The button "edit" should be visible just below the tags.
Jul
20
comment Products of elliptic isometries
Dear Seirios - Could I ask you to spell out the intended definition of ${\rm Fix}_\delta$?
Jul
20
comment Products of elliptic isometries
Ah - very good. That makes much more sense. Well, if this is the definition meant then that should be included in the original question???
Jul
19
comment Products of elliptic isometries
Also, if $g = h$ then your equality is satisfied, as both sides are zero...
Jul
19
comment Products of elliptic isometries
Dear Anton - Your condition does not work, because it is not symmetric in $g$ and $h$. For example, consider the $(2,p,\infty)$ triangle group. Let $g$ be the element of order $p$ and let $h$ be the element of order $2$. The point is that the "broken geodesic" needs to be more-or-less straight at all of its corners (not just at half of them).
Jul
19
answered Products of elliptic isometries
Jul
18
reviewed Approve homological-algebra tag wiki
Jul
18
reviewed Approve homological-algebra tag wiki excerpt
Jun
6
comment teichmuller geodesics and hyperbolic mapping torus
Lee - as you suspected, no uniform estimate can exist. See my answer for a family of examples (which also cover the WP metric.)
May
28
awarded  Nice Answer
Apr
26
comment teichmuller geodesics and hyperbolic mapping torus
Dylan - $\ell$ need not track $\sigma$, even in the WP metric. See my answer for a sketch of this.
Apr
26
revised teichmuller geodesics and hyperbolic mapping torus
wording
Apr
26
comment Pseudoanosov mapping torus and length of curves.
Yes - this always happens if $S - X$ is more than a collection of annuli and pairs of pants.
Apr
26
revised teichmuller geodesics and hyperbolic mapping torus
added remark about the thin part...
Apr
26
answered teichmuller geodesics and hyperbolic mapping torus
Apr
26
comment Explicit examples of Dehn presentations of hyperbolic groups
The argument for this relation is the same, because it and the one you give yield identical tilings of the hyperbolic plane.
Apr
26
revised Explicit examples of Dehn presentations of hyperbolic groups
change intro
Apr
26
revised Explicit examples of Dehn presentations of hyperbolic groups
added tag