User Eric Wofsey

3 votes

Mapping torus of a homotopy equivalence

answered Nov 12, 2009 at 22:58

3 votes

Is it that only with normal matrices, the transition matrix to its [del: inherent] [ins: own] basis is unitary?

answered Nov 7, 2009 at 19:29

2 votes

Accepted

Something like Yoneda's lemma

answered Oct 26, 2009 at 21:39

2 votes

Simplicial model of Hopf map?

answered Oct 28, 2009 at 15:18

2 votes

Embedding abelian categories to have enough projectives

answered Oct 17, 2009 at 7:09

2 votes

do behavior of gimel or GCH determine all infinte products of cardinals?

answered Feb 22, 2013 at 23:31

2 votes

Construction of a convex function nondifferentiable on a countable set

answered Sep 8, 2013 at 21:32

2 votes

Accepted

What are the morphisms in the category of zig-zags?

answered Aug 19, 2013 at 20:08

2 votes

Generalizations and limitations of Quillen's F-isomorphism theorem

answered Mar 23, 2013 at 4:20

2 votes

Tychonoff spaces and ideals

answered Oct 6, 2013 at 11:43

2 votes

Accepted

How can one define the direct limit of classes?

answered May 16, 2014 at 16:09

2 votes

Inner product spaces without symmetry/hermitian axiom

answered Apr 27, 2015 at 7:02

2 votes

$\mathcal S'(\mathbb R^d)$ is separable

answered May 22, 2015 at 17:54

2 votes

Accepted

A Hausdorff atom in lattice of group topologies

answered Feb 7, 2015 at 15:40

2 votes

Accepted

Homology of a finite disjoint union of open cells

answered Jan 11, 2015 at 22:26

2 votes

Accepted

Does this version of Hadwiger's conjecture hold for graphs with infinite chromatic number?

answered Oct 23, 2015 at 20:13

2 votes

Complement of a finite union of convex sets

answered Nov 23, 2015 at 0:01

2 votes

Accepted

About equalizer of Boolean algebras

answered Feb 3, 2016 at 8:26

1 vote

Accepted

Is it possible to generalize a result of Wang?

answered Aug 9, 2015 at 3:13

1 vote

Are epimorphisms (defined via an obvious action) of free Boolean algebras whose set of generators is a group automorphisms?

answered Nov 28, 2014 at 8:55

1 vote

Accepted

homotopic maps of locally finite spaces

answered Feb 15, 2015 at 0:55

1 vote

Accepted

How would you say that a small category is embedded into functors from a large $C'$ to abelian groups?

answered Apr 8, 2013 at 4:48

1 vote

Proof of the ''trangression theorem''

answered Mar 4, 2011 at 17:11

0 votes

Rings over which every module is free

answered Oct 14, 2009 at 23:24

-1 votes

Completion of the set of subsets with half volume.

answered Sep 9, 2014 at 23:55

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265 Answers

Mapping torus of a homotopy equivalence

Is it that only with normal matrices, the transition matrix to its [del: inherent] [ins: own] basis is unitary?

Something like Yoneda's lemma

Simplicial model of Hopf map?

Embedding abelian categories to have enough projectives

do behavior of gimel or GCH determine all infinte products of cardinals?

Construction of a convex function nondifferentiable on a countable set

What are the morphisms in the category of zig-zags?

Generalizations and limitations of Quillen's F-isomorphism theorem

Tychonoff spaces and ideals

How can one define the direct limit of classes?

Inner product spaces without symmetry/hermitian axiom

$\mathcal S'(\mathbb R^d)$ is separable

A Hausdorff atom in lattice of group topologies

Homology of a finite disjoint union of open cells

Does this version of Hadwiger's conjecture hold for graphs with infinite chromatic number?

Complement of a finite union of convex sets

About equalizer of Boolean algebras

Is it possible to generalize a result of Wang?

Are epimorphisms (defined via an obvious action) of free Boolean algebras whose set of generators is a group automorphisms?

homotopic maps of locally finite spaces

How would you say that a small category is embedded into functors from a large $C'$ to abelian groups?

Proof of the ''trangression theorem''

Rings over which every module is free

Completion of the set of subsets with half volume.