Mark Hovey's user avatar
Mark Hovey's user avatar
Mark Hovey's user avatar
Mark Hovey
  • Member for 13 years, 1 month
  • Last seen more than 4 years ago
40 votes
Accepted

What is the Cayley projective plane?

35 votes

Why forgetful functors usually have LEFT adjoint?

20 votes

Why does one think to Steenrod squares and powers?

15 votes
Accepted

Categories which are not compactly generated

15 votes

Intuition about the triangulation of a homotopy category K(A)

14 votes
Accepted

localizing subcategories of $HF_p$-local spectra

13 votes

Do the signs in Puppe sequences matter?

12 votes

(∞, 1)-categorical description of equivariant homotopy theory

12 votes

When is a commutative ring the limit of its local rings?

11 votes

Ideas on how to prevent a department from being shut down.

11 votes

Why localize spaces with respect to homology?

10 votes

Whitehead theorem for cohomotopy

10 votes

E_\infty spectrum corresponding to Z_p

10 votes

What's so great about blackboards?

10 votes

Can a quotient ring R/J ever be flat over R?

8 votes

Is there a constructive description of type in the p-local stable homotopy category?

8 votes

Freyd-Mitchell for triangulated categories?

8 votes

Model structure of commutative dg-algebras inside all dg-algebras

8 votes
Accepted

What determines a model structure?

8 votes
Accepted

When is every submodule pure?

7 votes

Are these two notions of "dualizable" spectra equivalent?

7 votes

Model structure of commutative dg-algebras inside all dg-algebras

7 votes

Cogroup objects

6 votes
Accepted

Spectra of rings that are projective module over a subring

6 votes
Accepted

Are injective Omega-spectra the S-local objects of symmetric spectra for some class S?

5 votes

Octonionic Unitary Group?

5 votes

homology of a mapping spectrum

3 votes
Accepted

A $2$-torsion version of the motivic stable homotopy category?

3 votes

Definition of the symmetric algebra in arbitrary characteristic for graded vector spaces

3 votes

Faithfully flat descent over Hopf algebras in terms of comodule structures