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Jan
27
awarded  Great Question
Jan
13
awarded  Nice Answer
Jan
6
awarded  Good Answer
Jan
2
comment Kahler differentials and Ordinary Differentials
@Saal No, it is not right. My experience with n-cafe is that whenever I look up a subject I find clear and elementary they will describe it in such abstract terms that I don't understand what they are talking about. Also, I've never seen them do any non-trivial calculations. But maybe they have done some: I no longer check their site which I find useless for me. But this is very personal. I guess some other mathematicians are enthusiastic about that site: more power to them.
Dec
19
awarded  Good Question
Dec
18
comment Irreducibility of polynomials in two variables
Thanks a lot for the reprint and your fantastic notes, dear Hugo. You write "Nous aimerions maintenant présenter un critère peu connu qui nous garantit qu’un polynôme à plusieurs variables est irréductible" . "Peu connu" indeed! This must be the only elementary algebra course in the universe mentioning Ehrenfeucht's result :-) Congratulations and thank you very much again for teaching us users such beautiful and completely underappreciated mathematics.
Dec
18
comment Irreducibility of polynomials in two variables
Dear viethung, your link sems broken.
Dec
18
awarded  Popular Question
Dec
17
comment Irreducibility of polynomials in two variables
Dear Hugo, thanks for this amazing answer, but I don't have access to Tverberg's paper. Would you be so kind as providing a copy ?
Dec
14
awarded  Populist
Dec
7
comment Tangent bundle of $S^2 \times S^1$ trivial or not
@abx: Bravo! I suppose the ambiguity of the word"trivial" in your statement was deliberate, although I find it ingenious to show how trivial the proof of triviality of the vector bundle can be made :-)
Dec
1
comment Counterexamples in Algebra?
The ring $R$ is not local.
Nov
24
comment Examples of Noetherian overkill
You write "More famous is ...". On the totally ordered set of mathematical results by famousness, I suppose? And by the way, I was not totally unaware of that result you evoke...
Nov
23
comment Equivalence of “Weyl Algebra” and “Crystalline” definitions of rings of differential operators between modules?
Dear Kevin, how come you ask such astonishingly advanced questions while still being an undergraduate? Do you self-study much?
Nov
22
answered Examples of Noetherian overkill
Nov
16
awarded  Notable Question
Oct
20
awarded  Good Answer
Oct
12
awarded  Informed
Oct
11
awarded  Yearling
Sep
29
comment Examples of using physical intuition to solve math problems
Dear @user45220: of course my comment was deliberately meant as a humorous word play and I'm happy that many users (like obviously you!) got the joke and upvoted it.