User Peter May

11 votes

Are finite spaces a model for finite CW-complexes?

answered Dec 28, 2017 at 20:02

11 votes

How are characteristic classes morphisms of infinite loop spaces? (if they are)

answered Sep 28, 2019 at 3:11

11 votes

Hopf structure on the universal enveloping of a super Lie algebra

answered Jul 11, 2019 at 2:48

11 votes

Lunch seminars for PhD students

answered Oct 15, 2021 at 15:47

11 votes

Incorrect information in an old article about the Kervaire invariant

answered Jan 19, 2020 at 15:25

11 votes

Accepted

Must a weak homotopy equivalence induce an isomorphism between stable homotopy groups?

answered Nov 16, 2013 at 2:02

11 votes

What is the correct definition of the (derived) tensor product over a dg-algebra?

answered Nov 11, 2013 at 2:13

11 votes

Accepted

Is the "inverse" (i.e., the "cohomological") numeration for singular (i.e., $H\mathbb{Z}$-)homology of spectra "acceptable"?

answered Sep 13, 2015 at 18:42

11 votes

Is there an analog of the Barratt-Eccles construction for group-like E_∞-spaces and E_∞-ring spaces?

answered Aug 30, 2014 at 19:09

11 votes

RO(G) grading of Mackey functors

answered Jul 26, 2014 at 20:12

10 votes

Accepted

A fibration of classifying spaces

answered Oct 6, 2014 at 2:09

10 votes

Reference for an unbiased definition of a symmetric monoidal category

answered May 29, 2015 at 17:37

10 votes

Fundamental group of a topological pullback

answered May 30, 2013 at 22:46

10 votes

Reference for ring structure on Thom spectra

answered Aug 11, 2016 at 15:38

10 votes

What is the relation between a ''homotopy fiber bundle'' and a Serre fibration?

answered Dec 27, 2011 at 2:09

10 votes

Non-oriented version of Poincaré duality

answered Apr 10, 2011 at 23:14

10 votes

Inner hom and geometric realization.

answered Feb 18, 2011 at 4:20

10 votes

Accepted

What do we mean by contractible for simplicial objects in a category?

answered Jun 20, 2012 at 11:00

10 votes

Are k-spaces named for Kelley?

answered Apr 17, 2012 at 2:29

10 votes

Infinite loop space structure of $BU^+$

answered Apr 18, 2012 at 2:40

10 votes

Acyclic categories related to structures in algebraic topology

answered Jul 27, 2012 at 2:23

10 votes

Accepted

When is homotopy orbit space weakly equivalent to orbit space, other than situation of free action?

answered Jul 11, 2012 at 17:52

10 votes

mapping space between classifying spaces

answered Feb 12, 2013 at 3:06

10 votes

Accepted

Abelian principal bundles

answered Sep 30, 2012 at 14:10

10 votes

Non-$\Sigma$ $E_n$ algebras?

answered Feb 22, 2013 at 15:44

10 votes

Accepted

Does primitive (resp. to comultiplication) homology classes comes from Hurewicz map?

answered Mar 24, 2013 at 22:50

10 votes

Accepted

On the naturality of the bar construction

answered Mar 20, 2013 at 0:07

9 votes

Simplicial space whose all face/degeneracy maps are homotopy equivalences

answered Mar 16, 2013 at 13:36

9 votes

Why should morphisms between two graded vector spaces preserve grading?

answered Jul 11, 2012 at 18:10

9 votes

Universal property of the smash product (of pointed spaces)

answered Aug 29, 2012 at 1:53

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268 Answers

Are finite spaces a model for finite CW-complexes?

How are characteristic classes morphisms of infinite loop spaces? (if they are)

Hopf structure on the universal enveloping of a super Lie algebra

Lunch seminars for PhD students

Incorrect information in an old article about the Kervaire invariant

Must a weak homotopy equivalence induce an isomorphism between stable homotopy groups?

What is the correct definition of the (derived) tensor product over a dg-algebra?

Is the "inverse" (i.e., the "cohomological") numeration for singular (i.e., $H\mathbb{Z}$-)homology of spectra "acceptable"?

Is there an analog of the Barratt-Eccles construction for group-like E_∞-spaces and E_∞-ring spaces?

RO(G) grading of Mackey functors

A fibration of classifying spaces

Reference for an unbiased definition of a symmetric monoidal category

Fundamental group of a topological pullback

Reference for ring structure on Thom spectra

What is the relation between a ''homotopy fiber bundle'' and a Serre fibration?

Non-oriented version of Poincaré duality

Inner hom and geometric realization.

What do we mean by contractible for simplicial objects in a category?

Are k-spaces named for Kelley?

Infinite loop space structure of $BU^+$

Acyclic categories related to structures in algebraic topology

When is homotopy orbit space weakly equivalent to orbit space, other than situation of free action?

mapping space between classifying spaces

Abelian principal bundles

Non-$\Sigma$ $E_n$ algebras?

Does primitive (resp. to comultiplication) homology classes comes from Hurewicz map?

On the naturality of the bar construction

Simplicial space whose all face/degeneracy maps are homotopy equivalences

Why should morphisms between two graded vector spaces preserve grading?

Universal property of the smash product (of pointed spaces)