User Eric Wofsey

19 votes

Does the proof of Picard's theorem become simpler by increasing the number of points that are not attained?

answered Jul 5, 2015 at 0:27

19 votes

Accepted

On the homotopy type of $\mathbb{QP}^\infty$

answered Dec 22, 2017 at 21:12

19 votes

Does the functor Sch to Top have a right adjoint?

answered Feb 19, 2016 at 19:24

19 votes

Accepted

Description of $\big(\ell^\infty(\mathbb N)\big)^{\!*}$ via ultrafilters

answered Feb 1, 2016 at 12:38

19 votes

Elements of infinite order in a profinite group

answered Oct 13, 2009 at 21:42

19 votes

Are $G$-spectra the same as modules over a "group ring spectrum"?

answered Nov 6, 2011 at 0:03

19 votes

Accepted

This is not a category. What is it?

answered Dec 14, 2012 at 19:23

18 votes

Accepted

Pullbacks as manifolds versus ones as topological spaces

answered Mar 12, 2013 at 13:38

18 votes

Circular, or missing, definition in set theory?

answered May 24, 2018 at 17:53

18 votes

Possible categorical reformulation for the usual definition of compactness

answered Mar 9, 2015 at 3:39

17 votes

Accepted

Punctured 3-manifold

answered Dec 27, 2014 at 6:34

17 votes

Spectrum of Ring of Smooth Functions on $\mathbb{R}^n$

answered Nov 30, 2015 at 18:13

17 votes

Homotopy-theoretic derived Morita equivalences

answered Jul 4, 2013 at 1:41

17 votes

All mapping space between CW complexes is a CW complex?

answered Dec 25, 2013 at 19:13

17 votes

Continuous relations?

answered Aug 23, 2014 at 15:40

17 votes

Accepted

Haar Measure on Locally Compact Semigroups

answered Sep 3, 2014 at 19:11

17 votes

Why is the rank of a locally free sheaf well-defined?

answered Nov 18, 2009 at 2:22

17 votes

Accepted

What do models where the CH is false look like?

answered Oct 16, 2009 at 16:02

17 votes

Accepted

Is the long line paracompact?

answered Oct 9, 2009 at 20:04

16 votes

Accepted

Cogroup objects

answered Nov 2, 2009 at 4:21

16 votes

Accepted

Rational Morava E-theory of cyclic groups

answered Jan 1, 2013 at 19:33

16 votes

Accepted

Artin Rings, Noetherian Rings, and the Axiom of Choice

answered Apr 15, 2017 at 21:51

16 votes

Accepted

Is this space the Stone–Čech compactification?

answered Dec 31, 2021 at 19:36

16 votes

Accepted

Commutative algebra counterexample

answered May 2, 2018 at 1:24

16 votes

Accepted

When is $X \rightarrow \text{Spec}(C(X))$ a homeomorphism?

answered Feb 27, 2015 at 1:43

16 votes

Accepted

Is Eilenberg-Maclane $\wedge$ Moore space the spectrum of the cohomology theory $H^*(\ ,G)$?

answered May 26, 2015 at 14:18

15 votes

Example of an unnatural isomorphism

answered Apr 9, 2015 at 8:25

15 votes

Fundamental groups of topological groups.

answered Sep 11, 2013 at 18:28

15 votes

Accepted

Homotopy groups of an infinite wedge of 2-spheres

answered Sep 23, 2013 at 20:31

14 votes

Examples of common false beliefs in mathematics

answered Apr 13, 2011 at 22:38

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265 Answers

Does the proof of Picard's theorem become simpler by increasing the number of points that are not attained?

On the homotopy type of $\mathbb{QP}^\infty$

Does the functor Sch to Top have a right adjoint?

Description of $\big(\ell^\infty(\mathbb N)\big)^{\!*}$ via ultrafilters

Elements of infinite order in a profinite group

Are $G$-spectra the same as modules over a "group ring spectrum"?

This is not a category. What is it?

Pullbacks as manifolds versus ones as topological spaces

Circular, or missing, definition in set theory?

Possible categorical reformulation for the usual definition of compactness

Punctured 3-manifold

Spectrum of Ring of Smooth Functions on $\mathbb{R}^n$

Homotopy-theoretic derived Morita equivalences

All mapping space between CW complexes is a CW complex?

Continuous relations?

Haar Measure on Locally Compact Semigroups

Why is the rank of a locally free sheaf well-defined?

What do models where the CH is false look like?

Is the long line paracompact?

Cogroup objects

Rational Morava E-theory of cyclic groups

Artin Rings, Noetherian Rings, and the Axiom of Choice

Is this space the Stone–Čech compactification?

Commutative algebra counterexample

When is $X \rightarrow \text{Spec}(C(X))$ a homeomorphism?

Is Eilenberg-Maclane $\wedge$ Moore space the spectrum of the cohomology theory $H^*(\ ,G)$?

Example of an unnatural isomorphism

Fundamental groups of topological groups.

Homotopy groups of an infinite wedge of 2-spheres

Examples of common false beliefs in mathematics