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jdc
  • Member for 13 years, 11 months
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48 votes
0 answers
17k views

What is the current understanding regarding complex structures on the 6-sphere?

31 votes
0 answers
834 views

The central insight in the proof of the existence of a class of Kervaire invariant one in dimension 126

20 votes
1 answer
1k views

Torsion in the Atiyah–Hirzebruch spectral sequence of a classifying space

9 votes
0 answers
257 views

Reference request: $H^* X$-module structure on the Mayer–Vietoris coboundary

9 votes
1 answer
664 views

Citation: earliest incidence of the Borel localization theorem

8 votes
1 answer
320 views

Doesn't completion of a representation ring preserve its indecomposables?

8 votes
2 answers
576 views

(Co)homology theories not satisfying the wedge axiom

8 votes
1 answer
351 views

Reference request: Origins of differential homological algebra

8 votes
1 answer
229 views

Simple identity on Lie algebras in a note of Koszul

8 votes
1 answer
290 views

Equivariant bundles invisible in K-theory and Borel cohomology

7 votes
1 answer
522 views

Naive equivariant transfer

7 votes
2 answers
489 views

Is this characterization of (-1)-eigenspaces of the Weyl group of $E_6$ known?

7 votes
0 answers
251 views

What is the status of this fifty-year-old conjecture of Kostant?

5 votes
1 answer
142 views

Example request: seriously deficient homogeneous spaces

5 votes
0 answers
359 views

Reference request: a Künneth spectral sequence map from equivariant K-theory to cohomology

5 votes
0 answers
190 views

Example request: equivariant formality versus formality for homogeneous spaces

5 votes
3 answers
746 views

Extension of scalars and support of a non-finitely generated module

5 votes
2 answers
1k views

Is a Lie group equivariantly formal under conjugation by a maximal torus?

5 votes
1 answer
600 views

Is a $G$-cell complex always a $G$-CW complex?

4 votes
0 answers
92 views

A dimension condition on the cohomology of a homogeneous space

4 votes
1 answer
276 views

If $N_G(S)/Z_G(S)$ is a reflection group, is it a Weyl group?

4 votes
0 answers
130 views

Infinite-dimensional Chevalley–Shephard–Todd theorem

3 votes
1 answer
287 views

Show the Cartan 3-form transgresses to the Killing form in the Weil algebra

3 votes
0 answers
60 views

Reference request: table of representation rings and relations

2 votes
0 answers
173 views

Locus classicus for the Chevalley restriction theorem

2 votes
0 answers
180 views

Does a surjection between polynomial rings lose one Krull dimension per generator quotiented?