bio | website | |
---|---|---|
location | ||
age | ||
visits | member for | 4 years, 9 months |
seen | 3 hours ago | |
stats | profile views | 1,905 |
Oct 25 |
revised |
Why is it so hard to compute $\pi_n(S^n)$?
gave homotopical reference for the James construction |
Oct 22 |
awarded | Nice Answer |
Oct 21 |
answered | Why is it so hard to compute $\pi_n(S^n)$? |
Oct 12 |
comment |
What is an infinite prime in algebraic topology?
I remember reading in a problem session from a long-ago conference a question asked by Haynes Miller saying something like: "Lots of theorems work for all sufficiently large $p$ --- can we make a theory of the infinite prime?" |
Oct 10 |
comment |
Motion planning algorithm
Sorry! $i:\partial I \hookrightarrow I$ is an unpointed cofibration so $i^*=ev$ is a fibration. |
Oct 10 |
comment |
Motion planning algorithm
$ev$ should be a fibration as long as $* \to X$ is a cofibration. |
Oct 10 |
comment |
Motion planning algorithm
Why do you need a CW complex? |
Oct 9 |
revised |
Andrica's and Legendre's Conjectures
fixed floors |
Oct 5 |
revised |
Finite complexes whose homotopy groups are not “finitely generated”
added link to related question |
Oct 5 |
revised |
Finite complexes whose homotopy groups are not “finitely generated”
added detail for Q2 and rational homotopy theory tag |
Oct 2 |
awarded | Good Answer |
Oct 2 |
comment |
Finite complexes whose homotopy groups are not “finitely generated”
@BenWieland: when you say "I think so" do you mean you think this is the correct translation, or that the translated statement is actually true? If the second, I'd love to see some explanation as an answer. |
Oct 1 |
reviewed | Approve suggested edit on Order-increasing bijection from arbitrary groups to cyclic groups |
Sep 29 |
comment |
The impact of large cardinals in mathematics
Maybe Q5? I don't know about famous, and I don't know about impact. But this is a theorem that some people doing "ordinary mathematics" know about and use in their thinking sometimes, and it refers to large cardinals. I thought it didn't exactly fit any of the questions perfectly, but fit the question as a whole. |
Sep 29 |
answered | The impact of large cardinals in mathematics |
Sep 27 |
reviewed | Approve suggested edit on When are two proofs of the same theorem really different proofs |
Sep 26 |
awarded | Good Question |
Sep 26 |
revised |
Finite complexes whose homotopy groups are not “finitely generated”
Drew attention to the rational version of the question. |
Sep 22 |
revised |
Characterization of a subset of [0,1] $II$
[Edit removed during grace period] |
Sep 20 |
reviewed | Approve suggested edit on Changing Left Comodules into Right Comodules via the Antipode, and Comodule Tensor Products |