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Charles Rezk
  • Member for 12 years, 3 months
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I'm a homotopy theorist at the University of Illinois, with interests ranging from higher category theory to p-divisible groups.
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92
Which manifolds are homeomorphic to simplicial complexes?
Oct 28 '10
69
Why are the characters of the symmetric group integer-valued?
Jan 4 '10
58
Why does one think to Steenrod squares and powers?
Nov 21 '09
45
What's an example of an $\infty$-topos not equivalent to sheaves on a Grothendieck site?
Nov 10 '19
44
What is the shortest Ph.D. thesis?
Feb 8 '11
42
What is the "intuition" behind "brave new algebra"?
Nov 7 '09
37
How do you keep your research notes organized?
Oct 22 '09
36
Are there pairs of highly connected finite CW-complexes with the same homotopy groups?
Nov 8 '09
36
A possible generalization of the homotopy groups.
Sep 5 '10
35
For which spaces is homology (or cohomology) determined by the Eilenberg-Steenrod axioms
Oct 22 '09
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25
My question has already been asked, but not really answered? What should I do?
22
Questions containing my "favorite tags" are barely distinguishable
8
TeX sometimes displays incorrectly on search pages
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19
Are there any simply connected parallelizable 4-manifolds?
12
How do I produce Theorems and equations which are numbered by hand?
8
Different ways of constructing the free group over a set.
5
Direct way to show that 2-out-of-6 holds for weak equivalences in a model category?

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