Skip to main content
MathOverflow
John Klein's user avatar
John Klein's user avatar
John Klein's user avatar
John Klein
  • Member for 14 years, 4 months
  • Last seen more than a week ago
  • Metro Detroit. Brooklyn expatriate.
Profile Activity
Stats
18,852
reputation
0
reached
0
answers
0
questions
Communities
About

I'm an algebraic topologist. I also like espresso.

Badges
View all badges
This user doesn’t have any gold badges yet.
14
silver badges
1
bronze badge
Posts

This user hasn’t posted yet.

Top network posts
View all network posts
63
Thomason's "open letter" to the mathematical community
35
Can anyone explain to me what is an assembly map?
28
On the (derived) dual to the James construction.
27
Groupoid actions on spaces
23
A map inducing isomorphisms on homology but not on homotopy