Olivier
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Registered User
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May 13 |
revised |
Is a complete intersection satisfying Jacobian matrix smooth criterion a smooth variety? Fixed the title |
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May 3 |
awarded | ● Good Answer |
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Apr 29 |
comment |
the topology of power series ring I'm sure an answer can be very quickly found at math.stackexchange.com |
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Apr 18 |
revised |
Applications of Govorov-Lazard Theorem? edited body |
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Apr 17 |
answered | Applications of Govorov-Lazard Theorem? |
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Mar 15 |
comment |
Automorphism group of regular graph @Chris Godsil Frucht's original construction does not produce regular graphs but the first regular construction is also due to Frucht as far as I know (Graphs of degree three with a given abstract group 1949) so might reasonably be called Frucht's theorem as well. Do you disagree? |
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Mar 15 |
answered | Automorphism group of regular graph |
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Feb 27 |
answered | Should one attack hard problems? |
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Feb 27 |
revised |
Mathematical habits of thought and action which would be of use to non-mathematicians added 3 characters in body |
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Feb 27 |
revised |
Elliptic curves over QQ with isomorphic n-torsion Replaced status quo (the existing state of affairs) by status (the position of affairs at a particular time). |
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Feb 26 |
accepted | unramified base change in characteristic p > 0? |
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Feb 25 |
revised |
unramified base change in characteristic p > 0? deleted 69 characters in body |
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Feb 25 |
answered | unramified base change in characteristic p > 0? |
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Feb 24 |
comment |
unramified base change in characteristic p > 0? Doesn't that follow from the proof of the local Langlands correspondence for function fields (by Laumon, Rappoport and Stuhler)? |
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Feb 20 |
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Grothendieck monodromy theorem for l-adic sheaves This question looks very interesting to me, but there are a few things I don't quite understand. Are you looking at the $G_{F}$ action the étale cohomology of $X$ with coefficients in $C$? Would you give an example of the typical situation you have in mind? |
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Feb 14 |
revised |
Definition of CM modular form added 119 characters in body |
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Feb 14 |
comment |
Definition of CM modular form Dear wccanard (!), I did write that $k$ should be greater than 2, but now I realize I did not repeat the condition when passing to $F$. Thanks for pointing this out. |
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Feb 13 |
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Definition of CM modular form Let me add a reference. You can read Motives and automorphic forms: the potentially abelian case, available on L.Fargues webpage. This is a modern exploration of the topic (which contains much much more than the answer to your question). |
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Feb 13 |
answered | Definition of CM modular form |
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Feb 8 |
comment |
Which finite group is not the automorphism group of some rooted finite trees I think this indeed a theorem of Jordan. |
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Feb 6 |
comment |
Periods for 2-variable p-adic L-functions Of course, the freeness over the localized Hecke algebra is much easier to prove (the real freeness being false under suitable hypotheses) and this is why Greenberg/Stevens type results require much weaker hypotheses. |
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Feb 6 |
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Periods for 2-variable p-adic L-functions Dear Joël, The point is that different hypotheses will yield different conclusions about the nature of $c$. Does $c$ vary analytically or not on $U$ for instance? You are right to say that $A(x)$ is a necessary condition, but as usual, the devil is in the details. You say that $A(x)$ means that the space of modular symbols is free on the Hecke algebra, but which Hecke algebra? If it is the Hecke algebra localized at $x$, then you get Greenberg/Stevens, Mok style results. If it is the Hecke algebra before localization, then you get Kitagawa style results (type (1) and (2) of my answer). |
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Feb 6 |
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Periods for 2-variable p-adic L-functions @Filipo: I don't think there is a subscript $\chi$ in (2). There is a subscript $x$ as there should be. @Joël: Kitagawa-Mazur give type (2) results, maybe not in Kitagawa's and Mazur's work, but in subsequent works. |
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Feb 6 |
answered | Periods for 2-variable p-adic L-functions |
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Jan 17 |
comment |
Hamiltonian cycles in power-graphs Dear Gerhard, Can you explain why you think this implication is reasonable? I don't see it myself (but I don't know much about the topic). Moreover, the data in the linked note show that there exists values of $n$ such that G2(n+2) has less hamiltonian cycles than G2(n). |
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Dec 19 |
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On topology of p-adic numbers. Both Wikipedia and Google know the answer to this (very elementary) question. If you don't find it there or by yourself, you should try math.stackexchange.com |
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Dec 18 |
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Generalized Euler sequence on a projective scheme I don't want to put so much spam in my thesis, and would like to cite this result, which probably has been proven in the 60s Giving appropriate credit is nice and important of course. Then again, a thesis seems to me to be a good place to write up things that are supposedly well-known to the experts but for which a good reference is lacking. |
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Dec 3 |
awarded | ● Yearling |
