Reputation
19,872
Next privilege 20,000 Rep.
Access 'trusted user' tools
Badges
8 48 131
Impact
~475k people reached

May
31
answered Matrix of matrices in matlab
May
28
accepted Homology groups of torus
May
27
revised Homology groups of torus
added 144 characters in body
May
27
comment Homology groups of torus
@Theo Buehler and @Mariano Suárez-Alvarez: 2 up votes mean this is correct, I take it?
May
27
comment Homology groups of torus
I did it! : ) Thanks for looking at it and telling me if it's right!!
May
27
answered Homology groups of torus
May
25
comment Finite field, I don't quite understand the concept
That's right. I should've written: coefficients in $Z_2$. It has 2 to the 8 elements because the polynomials have 8 terms. Sorry Will!
May
25
comment Finite field, I don't quite understand the concept
It's 2 to the power of 8. A polynomial over $GF(2^8)$ is a polynomial with coefficients in $Z$ modulo $2^8$. Finite means it doesn't have infinitely many elements. $GF(2^8)$ has $2^8$ elements.
May
25
comment Homology groups of torus
Thanks, I'm glad I'm on the right track. As for the attaching maps: off the top of my head I have no idea where they come in here. I'll have to look at it again later, I can't right now. I think I can compute the boundary maps, I'll post them later, too.
May
25
asked Homology groups of torus
May
25
comment Computing the homology groups of the torus or a cell complex
I think I have to look into "Cellular homology".
May
25
comment Computing the homology groups of the torus or a cell complex
I'm actually reading that but not sequentially. I did have a look but couldn't find where he does it. Can someone point me to it please?
May
25
asked Computing the homology groups of the torus or a cell complex
May
19
comment How to estimate failure probability from count until first failure?
@john: No, 1001 isn't a valid sequence. You stop when you get 0.
May
16
comment Homology groups of unit square with parts removed
@Aaron: also many thanks for your second comment. I was wondering which things apply to topological spaces in general and which only to cell complexes. I'll have to make a table or something containing that information because some things apply to topological spaces.
May
16
comment Homology groups of unit square with parts removed
@Aaron: in your first comment you argue that the wedge is not homeomorphic to $X/A$ but you also mention that there is a continuous bijection. But that means they are homotopy equivalent and therefore have the same homology groups. Or is this wrong reasoning? Not that it makes any difference but I'd like to know anyway.
May
16
accepted Follow up question about translation of a limit expression
May
15
comment Follow up question about translation of a limit expression
Thanks, me too : )
May
15
revised Follow up question about translation of a limit expression
deleted 24 characters in body; added 34 characters in body
May
15
comment Follow up question about translation of a limit expression
I had proved that the limit exists in my answer to the original post but at the moment I'm trying to do it assuming that I don't know that already so you may insist. : )