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user84144
  • Member for 8 years, 5 months
  • Last seen more than 6 years ago
27 votes
1 answer
4k views

Intuition for Picard-Lefschetz formula

25 votes
2 answers
2k views

Steenrod operations in etale cohomology?

23 votes
1 answer
2k views

Flat versus etale cohomology

22 votes
2 answers
1k views

Describing the crystalline extension of $\mathbb{Q}_p$ by $\mathbb{Q}_p$

15 votes
1 answer
807 views

Measuring the failure of pushforward to commute with Steenrod squares

11 votes
0 answers
359 views

MU and the integral Hodge Conjecture

11 votes
0 answers
245 views

Reference for $E_{\infty}$ algebra structure on cohomology of a site

10 votes
2 answers
752 views

What is known about this cohomology operation?

10 votes
3 answers
1k views

Who discovered this definition of Stiefel-Whitney classes?

9 votes
0 answers
202 views

Eilenberg-Moore spectral sequence in etale cohomology?

8 votes
1 answer
837 views

intersection cohomology and nearby cycles

8 votes
0 answers
396 views

The definition of Drinfeld modules

8 votes
1 answer
483 views

Clarifying Quillen's comment on why Adams operations commute with transfer

8 votes
1 answer
475 views

Any finite simplicial complex has the homotopy type of an algebraic variety

8 votes
0 answers
226 views

Topology of family of complex varieties

5 votes
0 answers
559 views

How do you understand the Moy-Prasad filtration of G_2?

5 votes
1 answer
614 views

Moduli of hyperelliptic curves: odd vs even genus

5 votes
2 answers
335 views

Criterion for alternation of the linking form

4 votes
0 answers
228 views

Semisimple vs ordinary trace of Frobenius on nearby cycles of affine flag variety

4 votes
1 answer
179 views

Symmetric multiplication on homotopy quotient of topological space

3 votes
0 answers
274 views

What is the integral cohomology of an Enriques surface over a finite field?

2 votes
1 answer
235 views

Non-isomorphic line bundles detected by sub-curves?

2 votes
1 answer
145 views

homotopy Sym and quotients