10,926 reputation
33781
bio website
location Moscow, Russia
age
visits member for 4 years, 6 months
seen 3 hours ago

Aug
21
revised Cohomology group of free quotient.
answer expanded: (although OP's conjecture is false in general) it's true over Z[1/n]
Mar
10
revised De Rham cohomology of $\mathbb{RP}^{n}$
tex
Mar
8
revised exceptional-isomorphisms wiki excerpt
added 170 characters in body
Mar
8
revised Is this using the first isomorphism theorem for rings?
edited tags
Feb
25
revised Bolzano–Weierstrass theorem
title
Feb
10
revised Example of non-isomorphic vector bundles with the same element in $K$
edited tags
Feb
4
revised Differentiablility of a function of two variables
edited title
Feb
4
revised Why are characteristic classes well-defined?
edited tags
Jan
29
revised How to understand the diagonal approximation?
some whitespaces, at least
Jan
26
revised Gauss-type sums for cube roots
added 16 characters in body
Jan
26
revised Gauss-type sums for cube roots
added 16 characters in body
Jan
26
revised Why is this complex acyclic?
added 36 characters in body
Jan
26
revised Why is this complex acyclic?
edited tags
Jan
20
revised computing cohomology algebra of connected sum of two real projective spaces
edited tags
Jan
20
revised Cohomology ring $H^*(\mathbb{R}P^3 \# \mathbb{R}P^3; \mathbb{Z}_2)$.
edited tags
Jan
17
revised Morita equivalence of acyclic categories
edited tags
Jan
15
revised Spaces with equal homotopy groups but different homology groups?
edited tags
Jan
15
revised Spaces with equal homotopy groups but different homology groups?
added 131 characters in body
Jan
11
revised The proof of $\hat{b}(\hat{a}\cdot\hat{c})-\hat{c}(\hat{a}\cdot\hat{b})=\hat{a}\times(\hat{b}\times\hat{c})$
title
Jan
2
revised Generalization of “easy” 1-D proof of Brouwer fixed point theorem
link