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age 28
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I am a PhD student interested in Algebraic Geometry.

Aug
8
answered What math institutes offer research in pairs/research in teams?
Sep
16
awarded  Popular Question
Jun
25
awarded  Citizen Patrol
Jun
5
awarded  Nice Question
Feb
25
comment What are the monomorphisms in the category of schemes?
Nice and complete answer! I particularly like the criterion (2). I add an example parallel to the last one: In EGA IV, 17.9.1 it's proved that the étale monomorphisms are exactly the open immersions.
Feb
13
awarded  Nice Answer
Jan
25
revised Books you would like to read (if somebody would just write them…)
added 1 characters in body
Jan
24
awarded  Autobiographer
Jan
24
awarded  Teacher
Jan
24
answered Books you would like to read (if somebody would just write them…)
Jan
19
comment where can you find Grothendieck's “Recoltes et Semailles”?
They removed the links from the webpage but apparently most files are still online, look for instance math.jussieu.fr/~leila/grothendieckcircle/pubtexts.php and math.jussieu.fr/~leila/grothendieckcircle/unpubtexts.php.
Jan
18
awarded  Scholar
Jan
18
comment Locally constant sheaves for the étale topology, lack of intuition about “étale-localness”
Thanks, I like this point of view.
Jan
18
accepted Locally constant sheaves for the étale topology, lack of intuition about “étale-localness”
Jan
18
awarded  Supporter
Jan
18
comment Locally constant sheaves for the étale topology, lack of intuition about “étale-localness”
That's indeed what was confusing me, now everything is much more clear, thanks!
Jan
18
awarded  Student
Jan
18
comment Locally constant sheaves for the étale topology, lack of intuition about “étale-localness”
Sorry my previous comment was an answer for Daniel, but you were faster than me. Tom, I'll think about your suggestion, I did'n think about that.
Jan
18
comment Locally constant sheaves for the étale topology, lack of intuition about “étale-localness”
thanks for the remark, you're right the question wasn't very clear, I just edited it. In the Zariski topology if you have two sheaves F and G on the scheme X, the presheaf $Isom_{F,G}$ associating to a Zariski open U the isomorphisms between the restrictions of F and G to U is indeed a sheaf, i.e. you can patch local isomorphisms as soon as they verify a cocycle condition. I thought this was the case for the étale site as well but the above example leaves me quite confused, I'd like to understand what's going on.
Jan
18
awarded  Editor