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Top Questions
127
votes
My student's family won't let her study what she wants
career-path
international-students
asked Jan 18, 2018 at 0:12
academia.stackexchange.com
46
votes
What is the current understanding regarding complex structures on the 6-sphere?
dg.differential-geometry
at.algebraic-topology
complex-geometry
kt.k-theory-and-homology
index-theory
asked Feb 28, 2017 at 3:20
mathoverflow.net
34
votes
How to acknowledge unhelpful conversations
etiquette
acknowledgement
correspondence
asked Jan 30, 2017 at 0:43
academia.stackexchange.com
33
votes
Why would I define Alexander–Spanier cohomology?
algebraic-topology
math-history
homology-cohomology
asked Mar 2, 2015 at 20:44
math.stackexchange.com
31
votes
The central insight in the proof of the existence of a class of Kervaire invariant one in dimension 126
at.algebraic-topology
homotopy-theory
stable-homotopy
asked Jul 19, 2021 at 23:48
mathoverflow.net
23
votes
Atiyah-Macdonald Exercises 5.16-5.19
commutative-algebra
asked Mar 3, 2011 at 10:51
math.stackexchange.com
20
votes
Torsion in the Atiyah–Hirzebruch spectral sequence of a classifying space
at.algebraic-topology
kt.k-theory-homology
spectral-sequences
classifying-spaces
asked Apr 6, 2017 at 21:40
mathoverflow.net
13
votes
Does inclusion of a ring into a polynomial ring induce a closed map on prime spectra?
commutative-algebra
asked Feb 15, 2011 at 12:10
math.stackexchange.com
12
votes
Exercise 11.5 from Atiyah-MacDonald: Hilbert-Serre theorem and Grothendieck group
commutative-algebra
asked Oct 20, 2012 at 20:48
math.stackexchange.com
12
votes
I want a really small underbrace
math-mode
spacing
asked Jan 25, 2015 at 3:00
tex.stackexchange.com
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Top Answers
15
Proof behind $S^n\cong SO(n+1)/SO(n)$
math.stackexchange.com
15
Are the symmetric spaces $\operatorname{SU}(n)/{\operatorname{SO}(n)}$ always nontrivial in the bordism rings for $n>2$?
mathoverflow.net
8
Is there any "deep" relation between the localization theorem of equivariant cohomology and the localization theorem of equivariant K-theory
mathoverflow.net
8
How to deal with an advisor that offers you nearly no advising at all?
mathoverflow.net
7
Leray-Hirsch Using Kunneth Formula from "Differential form in Algebraic Topology" by Bott and Tu
math.stackexchange.com
7
Cohomology ring of mapping torus
mathoverflow.net
6
Tor for graded modules over a graded ring
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6
$H_n(\mathbb{R}P^4 \times S^1)$
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6
What is the equivariant cohomology of a group acting on itself by conjugation?
mathoverflow.net
5
Proof of a certain proposition on sheaves without using cohomology
math.stackexchange.com
5
Are quotients of chain groups $C_n(X)/C_n(A)$ still free?
math.stackexchange.com
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