user avatar
user avatar
user avatar
Piotr Achinger
  • Member for 12 years, 3 months
  • Last seen this week
56 votes
1 answer
2k views

History: What was the Lemma? (Grothendieck Harvard Lectures; Mumford)

40 votes
1 answer
5k views

Did Hilbert laugh?

  • 5,785
36 votes
5 answers
4k views

What is the cotangent complex good for?

  • 49.2k
21 votes
2 answers
3k views

intuition for hochschild homology

  • 416
16 votes
1 answer
2k views

Applications of $p$-adic Hodge theory

15 votes
1 answer
1k views

How would you organize a cycle of seminars aimed at learning together some basics of Derived Algebraic Geometry?

  • 21.6k
14 votes
2 answers
764 views

Non semi-simple monodromy in an algebraic family

11 votes
1 answer
592 views

Extended Deformation Theory (dg-Lie algebra principle in positive characteristic?)

  • 113
10 votes
0 answers
229 views

Best proof of Artin approximation?

  • 4,034
9 votes
1 answer
778 views

deformation theory in positive characteristic

  • 508
9 votes
1 answer
903 views

Etale cohomology of localizations of henselian rings

  • 23.3k
9 votes
0 answers
251 views

Understanding the mixed Hodge structure on D-modules on $\mathbb{C}$

  • 41.2k
8 votes
1 answer
678 views

What is the theory of the random poset?

7 votes
2 answers
486 views

A proposition on cyclic group

  • 1,287
7 votes
0 answers
220 views

Derived symmetric powers and determinants

  • 1,931
7 votes
0 answers
225 views

Example of torsion differential forms

6 votes
3 answers
497 views

Spectrum of a ring (studied by Krull?) of rational functions

  • 397
3 votes
1 answer
288 views

A non-rational variety with a full exceptional collection?