Simon Markett's user avatar
Simon Markett's user avatar
Simon Markett's user avatar
Simon Markett
  • Member for 11 years, 3 months
  • Last seen more than 8 years ago
28 votes
4 answers
3k views

Fibrations and Cofibrations of spectra are "the same"

27 votes
6 answers
4k views

A toolbox for algebraic topology

20 votes
4 answers
4k views

Why study simplicial homotopy groups?

7 votes
1 answer
765 views

K-theory, monoidal vs. exact

5 votes
0 answers
325 views

Is the geometric realisation of a nerve equivalent to the classifying space of its categorisation?

5 votes
1 answer
924 views

Any abelian category as filtered colimit of categories of projective modules

5 votes
0 answers
230 views

What does it mean for the $\Pi_\infty$ groupoid to be fully fibrant?

5 votes
1 answer
228 views

On the obstruction of a sequence of simplicial spaces that is levelwise a fibration

4 votes
2 answers
1k views

"Wrong" strictification of symmetric monoidal categories

4 votes
1 answer
305 views

K theory of a simplicial monoidal category, Cofinality theorem

4 votes
1 answer
2k views

(algebraic) Taylor expansion for polynomials (rational functions) with coefficients in an arbitrary field.

4 votes
0 answers
154 views

What is the grading of x(x−1)R[x]? Loopspace for Karoubi-Villamayor K-theory.

2 votes
3 answers
785 views

Classify matrices up to similarity over arbitrary (commutative) ring.

1 vote
0 answers
691 views

Is any presheaf on a local ring a sheaf? Stalks/points for some Grothendieck topologies