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Juan S

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Top Questions
25 votes

Homology of cube with a twist

algebraic-topology asked Apr 4 '11 at 13:06
math.stackexchange.com

22 votes

A list of newcommand objects

macros asked Apr 10 '12 at 2:57
tex.stackexchange.com

15 votes

Decomposition of a manifold

general-topology manifolds geometric-topology asked Nov 2 '11 at 2:32
math.stackexchange.com

9 votes

Short Exact Sequences & Rank Nullity

abstract-algebra group-theory modules homological-algebra asked Feb 28 '11 at 4:21
math.stackexchange.com

9 votes

Homology of punctured projective space

algebraic-topology asked Apr 6 '11 at 6:52
math.stackexchange.com

9 votes

Derived functor of a derived functor

homological-algebra derived-functors asked Jun 27 '11 at 8:46
math.stackexchange.com

8 votes

Visualising regular CW complex

algebraic-topology asked Apr 4 '11 at 8:02
math.stackexchange.com

7 votes

Spectral Sequence proof of the five lemma

homological-algebra spectral-sequences asked Jul 15 '11 at 8:24
math.stackexchange.com

7 votes

Show that $\sqrt{1+t}$ lies in $\mathbb{Z}[1/2][\![t]\!]$

abstract-algebra asked Apr 24 '12 at 11:14
math.stackexchange.com

7 votes

The Picard-Brauer short exact sequence

reference-request commutative-algebra ring-theory asked Jan 16 at 5:30
math.stackexchange.com

1 2 3 next

Top Answers
18
Explicitly finding the sum of $\arctan(1/(n^2+n+1))$
math.stackexchange.com

11
For every $k \in {\mathbb Z}$ construct a continuous map $f: S^n \to S^n$ with $\deg(f) = k$.
math.stackexchange.com

8
Closed form formula for $\sum\limits_{k=1}^n k^k$
math.stackexchange.com

8
What algebraic topology book to read after Hatcher's?
math.stackexchange.com

6
Homology and Graph Theory
math.stackexchange.com

5
Homotopy groups of $S^2$
math.stackexchange.com

5
Learning Homology and Cohomology
math.stackexchange.com

5
Showing higher homotopy groups of $S^1$ are trivial
math.stackexchange.com

5
Group structure on $\mathbb R P^n$
math.stackexchange.com

5
Good real analysis book for self study
math.stackexchange.com


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