Tim Porter's user avatar
Tim Porter's user avatar
Tim Porter's user avatar
Tim Porter
  • Member for 14 years, 2 months
  • Last seen this week
64 votes

What are Jacob Lurie's key insights?

25 votes

A map of non-pathological topology?

23 votes

Why should algebraic objects have naturally associated topological spaces? (Formerly: What is a topological space?)

18 votes
Accepted

Crossed module structure on homotopy groups

18 votes
Accepted

Why don't ideals and quotients work well for categories?

18 votes

Which of Quillen's Papers Should I read?

16 votes

What are Galois Categories used for?

15 votes

What is sheaf cohomology intuitively?

15 votes
Accepted

Primacy of arcs/arrows over vertices/objects

14 votes
Accepted

Pros and cons of Stacks Project as a reference compared with EGA/SGA

13 votes

Algebraic K-theory of the group ring of the fundamental group

13 votes

Recent Applications of Mathematics

13 votes

What does the homotopy coherent nerve do to spaces of enriched functors?

12 votes

Explicit constructions of K(G,2)?

12 votes
Accepted

Computational software in Algebraic Topology?

11 votes
Accepted

Where could I publish an average paper on triangulated categories?

11 votes

Are higher categories useful?

11 votes

Topology and the 2016 Nobel Prize in Physics

11 votes
Accepted

What are the applications of Dowker's theorem?

10 votes

What is a continuous path?

10 votes

Mathematics in Retirement

10 votes

Generalizing a problem to make it easier

9 votes
Accepted

Artin-Mazur codiagonal preserves Kan objects?

9 votes
Accepted

Singular Homology/Cohomology as a derived functor?

9 votes

Motivating the category of chain complexes

9 votes

Mathematics and cancer research

9 votes

When is the category of pro-objects a homotopy category?

9 votes

Why are we interested in the Fundamental Groupoid of a Space?

9 votes

Coverings of a space and coverings of a groupoid

8 votes
Accepted

resolution by simplicial objects versus resolution by chain complex

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