2,448 reputation
1230
bio website perso.univ-st-etienne.fr/…
location Saint-Etienne, France
age 32
visits member for 3 years, 2 months
seen 2 hours ago

I am currently a Maître de Conférences in Saint-Étienne, in France. I am particularly interested in Number Theory and Arithmetic Geometry.


2h
accepted Localizations or quotients of categories?
1d
comment Localizations or quotients of categories?
I tried to follow the link, but it seems to me thatit only describes localizations and I find no reference to quotients.
1d
reviewed Reject suggested edit on Generalization of a property of $A_n; n\geq 5$
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comment Localizations or quotients of categories?
Thanks! I'll give it a try. I wait a bit to accept your answer, just to see whether other opinions show up.
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comment Localizations or quotients of categories?
@SimonHenry: Thanks, but I must confess I am totally ignorant about model categories, so it would be helpful if you could add a couple of details/references...
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comment Localizations or quotients of categories?
@QiaochuYuan: Uhm... could you explain a bit more? In which world are you considering this colimit(s)? They are objects having universal properties "out" but as Categories, so you are working in $Cat$ or something?
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revised Localizations or quotients of categories?
edited title
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revised Localizations or quotients of categories?
edited body
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asked Localizations or quotients of categories?
Nov
25
comment Exactness of an additive left Kan extension
As you say, $F_!$ is the restriction of $(S\otimes_R -)$, so I am wondering: aren't you asking if a flat module sends short exact sequences of f.p. $R$-modules to short exact sequences of $S$-modules via tensor product? This is obvious, since f.p. modules are a full and faithful subcategory of all modules...
Nov
21
comment Eichler-Shimura congruence
See mathoverflow.net/questions/19390/…
Nov
20
comment elliptic curves and tower of finite fields
possible duplicate of reduction of elliptic curves to finite field
Nov
20
comment reduction of elliptic curves to finite field
Have you tried, first of all, to reduce an integer to $\mathbb{F}_{p^2}$?
Nov
17
reviewed Edit suggested edit on Is displacement controled by stable norm?
Nov
14
comment Oldest photographed mathematician
I personally find the question quite interesting to appear on this site.
Nov
1
awarded  Enlightened
Nov
1
awarded  Nice Answer
Oct
23
reviewed Reject suggested edit on Disruptive innovations in mathematical notations
Oct
23
comment Cohomological dimension of transcendental p-adic extensions
Can you say what $u$ is?
Oct
17
comment “Algebraic” topologies like the Zariski topology?
Do buildings attached to (say) a Coxeter group enter your question or you really want something "topological" and the combinatorial aspect of buildings somehow deviates?