Spice the Bird

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Name	Spice the Bird
Member for	2 years
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Website	nowebsite
Location	Somewhere
Age	28

zzinbiel@aol.com

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40

56

votes

6

answers

3k

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Counterexamples in algebraic topology?

at.algebraic-topology examples

mar 29 at 2:19 Ricardo Andrade 2,412●1●9●18

25

53

votes

4

answers

3k

views

Which manifolds are homeomorphic to simplicial complexes?

manifolds simplicial-complexes gt.geometric-topology at.algebraic-topology

mar 12 at 1:43 Andy Putman 18.3k●3●55●118

16

34

votes

10

answers

2k

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Why is Set, and not Rel, so ubiquitous in mathematics?

soft-question big-picture relation-algebra ct.category-theory

may 20 at 6:23 Wlodzimierz Holsztynski 1,218●5●11

14

30

votes

6

answers

2k

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Status of PL topology

gt.geometric-topology manifolds soft-question reference-request pl-topology

nov 7 at 9:27 Bruce Westbury 6,645●2●10●25

20

25

votes

3

answers

850

views

“Softness” vs “rigidity” in Geometry

geometry big-picture geometric-structures ct.category-theory soft-question

dec 13 at 16:04 Timothy Chow 14.6k●1●68●137

18

24

votes

0

answers

3k

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Grothendieck’s manuscript on topology

big-picture gn.general-topology topos-theory

mar 15 at 9:03 Thomas Riepe 5,897●1●24●56

14

20

votes

3

answers

1k

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A “meta-mathematical principle” of MacPherson

gt.geometric-topology manifolds

jun 12 11 at 3:07 Todd Trimble 22.4k●1●63●97

17

16

votes

1

answer

1k

views

Fundamental group of the moduli stack of elliptic curves

elliptic-curves ag.algebraic-geometry

aug 24 at 21:19 quasi-coherent 494●3●6

7

16

votes

2

answers

571

views

When does collection imply replacement?

set-theory lo.logic

jan 22 10 at 2:57 Joel David Hamkins 75.5k●8●188●346

7

14

votes

3

answers

1k

views

Conjectures in Grothendieck’s “Pursuing stacks”

homotopy-theory ag.algebraic-geometry ct.category-theory

dec 10 at 15:49 Jonathan Chiche 1,411●1●7●16

5

11

votes

1

answer

387

views

The space of compact subspaces of $R^\infty$ homotopy equivalent to a given finite complex.

at.algebraic-topology homotopy-theory reference-request

aug 26 10 at 18:27 Dev Sinha 2,470●10●20

5

11

votes

3

answers

846

views

When are (finite) simplicial complexes (smooth) manifolds?

gt.geometric-topology ag.algebraic-geometry algorithms at.algebraic-topology

jul 28 11 at 3:42 Ben Wieland 3,127●4●21

6

11

votes

2

answers

479

views

Deligne’s 1996 note on exceptional Lie groups

lie-algebras reference-request

jan 10 at 16:25 Noah Snyder 11.3k●1●26●71

3

9

votes

4

answers

726

views

A map inducing isomorphisms on homology but not on homotopy

at.algebraic-topology examples homology

aug 13 at 1:01 rhlewis 103●6

4

9

votes

2

answers

647

views

Are non-empty finite sets a Grothendieck test category?

homotopy-theory ct.category-theory at.algebraic-topology model-categories

jan 8 10 at 16:54 Denis-Charles Cisinski 4,908●11●20