1,337 reputation
11424
bio website preschema.com
location Essen, Germany
age 23
visits member for 5 years
seen 6 hours ago

Dec
16
awarded  Nice Answer
Dec
12
comment Does Bourbaki's (and Grothendieck's) approach to mathematics survive today?
quid and Charles Matthews, it seems to me that the question is actually about doing research, not about textbooks or graduate education, isn't it? Anyway, I feel that it's a valid and interesting question, especially considering that Spencer Bloch asked the same thing (see my answer).
Dec
12
answered Does Bourbaki's (and Grothendieck's) approach to mathematics survive today?
Dec
11
awarded  Civic Duty
Dec
11
awarded  Popular Question
Dec
10
awarded  Nice Question
Dec
7
comment Conjectures in Grothendieck's “Pursuing stacks”
Dear David, thanks a lot for this answer!
Dec
7
accepted Conjectures in Grothendieck's “Pursuing stacks”
Dec
5
asked Conjectures in Grothendieck's “Pursuing stacks”
Dec
2
comment Where should one go to learn about triangulated categories?
In fact, if you only care about triangulated categories and can read French, then Verdier's original thesis is also quite nice (available on the home page of G. Maltsinoitis). Of course it covers derived categories also but I found the exposition a bit confusing in some places.
Dec
2
comment Where should one go to learn about triangulated categories?
For triangulated and derived categories I would recommend the relevant sections in the book "Sheaves on manifolds" by Schapira and Kashiwara.
Jun
23
answered Basic questions about stacks 2
Jun
1
awarded  Popular Question
Mar
8
comment Presenting a paper: Do's and Don'ts?
Allen Knutson: What does V stand for?
Dec
18
comment Suggestions for good notation
Maybe $A \leftrightarrow B$ for bijections.
Dec
10
awarded  Commentator
Dec
10
comment Reference for tensor products of fields
The last result is proved in Zariski and Samuel's Commutative algebra I, pgs. 195-6. They require only one of $K/k$, $L/k$ to be separable.
Dec
10
awarded  Editor
Dec
10
revised What is the subgroup generated by involutions?
added 337 characters in body; deleted 2 characters in body
Dec
10
answered What is the subgroup generated by involutions?