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jdc
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48
What is the current understanding regarding complex structures on the 6-sphere?
Feb 28, 2017
31
The central insight in the proof of the existence of a class of Kervaire invariant one in dimension 126
Jul 19, 2021
20
Torsion in the Atiyah–Hirzebruch spectral sequence of a classifying space
Apr 6, 2017
15
Are the symmetric spaces $\operatorname{SU}(n)/{\operatorname{SO}(n)}$ always nontrivial in the bordism rings for $n>2$?
May 13, 2022
9
Citation: earliest incidence of the Borel localization theorem
Jan 30, 2015
9
Reference request: $H^* X$-module structure on the Mayer–Vietoris coboundary
Jun 10, 2017
8
Doesn't completion of a representation ring preserve its indecomposables?
May 2, 2017
8
(Co)homology theories not satisfying the wedge axiom
May 26, 2017
8
Simple identity on Lie algebras in a note of Koszul
Jun 4, 2017
8
Equivariant bundles invisible in K-theory and Borel cohomology
May 17, 2018
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How can we attract more grad students?
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My student's family won't let her study what she wants
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Why would I define Alexander–Spanier cohomology?
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How to acknowledge unhelpful conversations
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Atiyah-Macdonald Exercises 5.16-5.19
19
Proof behind $S^n\cong SO(n+1)/SO(n)$