Jon Beardsley

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Name	Jon Beardsley
Member for	2 years
Seen	6 hours ago
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Location	Baltimore
Age	26

Red herrings and wild geese.

jon(dot)s(dot)beardsley(AT)gmail(dot)com

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18

40

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3

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2k

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Forcing as a new chapter of Galois Theory

forcing set-theory galois-theory multiverse-of-sets lo.logic

jan 13 at 23:00 Rami 701●4●8

9

30

votes

3

answers

563

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Lambda-operations on stable homotopy groups of spheres

kt.k-theory-homology at.algebraic-topology stable-homotopy lambda-rings

nov 8 at 18:49 John Klein 7,216●19●28

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28

votes

5

answers

3k

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Intuition about the cotangent complex?

deformation-theory ag.algebraic-geometry derived-category intuition cotangent-complex

mar 13 11 at 18:33 Anton Geraschenko♦♦ 13.7k●3●48●108

10

25

votes

1

answer

720

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Identifying the stacks in Devinatz-Hopkins-Smith

at.algebraic-topology homotopy-theory ag.algebraic-geometry

oct 11 10 at 13:14 Tyler Lawson 18.7k●2●44●91

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23

votes

10

answers

2k

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List of Classifying Spaces and Covers

at.algebraic-topology group-actions classifying-spaces big-list

apr 26 12 at 23:40 Chris Gerig 5,526●1●12●40

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22

votes

0

answers

827

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What is the sandpile torsor?

co.combinatorics pr.probability ag.algebraic-geometry sandpile graph-theory

jan 15 12 at 17:40 JSE 13.4k●33●83

10

22

votes

3

answers

1k

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In which situations can one see that topological spaces are ill-behaved from the homotopical viewpoint?

big-list homotopy-theory at.algebraic-topology gt.geometric-topology ct.category-theory

feb 7 12 at 10:30 Ronnie Brown 5,287●19●20

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22

votes

1

answer

1k

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Degeneration of the Hodge spectral sequence

ag.algebraic-geometry arithmetic-geometry

mar 23 11 at 16:27 Torsten Wedhorn 1,125●2●10

6

20

votes

1

answer

592

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K(r)-localization and monochromatic layers in the chromatic spectral sequence

at.algebraic-topology homotopy-theory stable-homotopy spectral-sequences

apr 17 at 1:57 Aaron Mazel-Gee 3,308●6●21

8

20

votes

1

answer

484

views

Sane bound on number of moves for Maker-Breaker game on $\mathbb R^2$ for $\{0,1,2,3,4\}$

co.combinatorics combinatorial-game-theory combinatorial-geometry

mar 3 at 3:51 Douglas Zare 13.2k●3●36●58

9

19

votes

1

answer

504

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Do DG-algebras have any sensible notion of integral closure?

dg-algebras homological-algebra ac.commutative-algebra ag.algebraic-geometry

jan 7 10 at 19:46 Clark Barwick 2,927●13●18

8

19

votes

1

answer

412

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How many simplicial complexes on n vertices up to homotopy equivalence?

simplicial-stuff at.algebraic-topology co.combinatorics reference-request

jul 19 at 19:00 Will Sawin 18.7k●1●24●48

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18

votes

4

answers

2k

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Motivation/interpretation for Quillen’s Q-construction?

algebraic-k-theory

dec 11 11 at 15:20 John Klein 7,216●19●28

9

18

votes

3

answers

1k

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Modern Source for Spectra (including Ring Spectra)

stable-homotopy at.algebraic-topology homotopy-theory

nov 26 11 at 2:12 Peter May 12.1k●1●39●55

5

18

votes

2

answers

467

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Cohomologically trivial stacks

ag.algebraic-geometry sheaf-cohomology stacks

nov 20 at 20:06 Angelo 19.6k●3●47●75