Georges Elencwajg
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Registered User
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May 6 |
awarded | ● Good Answer |
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May 6 |
revised |
flatness in complex analytic geometry added 16 characters in body |
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May 2 |
awarded | ● Enlightened |
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May 2 |
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Reason for studying coherent sheaves on complex manifolds. Dear @Martin, thanks a lot: my problem was exactly what you described and I have now solved it by following your advice. |
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May 2 |
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Reason for studying coherent sheaves on complex manifolds. added 251 characters in body |
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May 2 |
revised |
Reason for studying coherent sheaves on complex manifolds. added 2 characters in body; deleted 2 characters in body |
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May 2 |
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Reason for studying coherent sheaves on complex manifolds. Why is my Latex edit not rendered? |
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May 2 |
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Reason for studying coherent sheaves on complex manifolds. added proof of (ii) |
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May 2 |
awarded | ● Nice Answer |
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May 2 |
revised |
Reason for studying coherent sheaves on complex manifolds. deleted 8 characters in body |
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May 2 |
accepted | Reason for studying coherent sheaves on complex manifolds. |
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May 2 |
answered | Reason for studying coherent sheaves on complex manifolds. |
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May 2 |
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Reason for studying coherent sheaves on complex manifolds. Your "locally finitely presented" should be "locally finitely generated" in lines 2-3. |
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Apr 28 |
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$H^1(X,O_X)$, holomorphic $1$-forms, and $b_1(X)/2$ for normal $X$. Dear @Donu, I am sad to learn that you have (almost) retired from this site. Why is that and would you consider changing your mind ? |
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Apr 27 |
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Who first cared about singular points? Thanks a lot for this interesting answer, Rhett. |
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Apr 21 |
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Equivalent definitions of ample bundles Dear @Francesco, @Laurent and @Serge, the human condition would be less tragic if everybody notationally distinguished between the sheaf stalk $\mathcal E_x$ of a locally free sheaf $\mathcal E$ and the fibre $E(x)=\mathcal E(x)=\mathcal E_x \otimes_{\mathcal O_{X,x}} \mathcal O_{X,x}/\mathfrak m_x$ of the associated vector bundle $E$. |
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Apr 17 |
awarded | ● Good Question |
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Apr 15 |
awarded | ● Popular Question |
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Apr 13 |
answered | When does the sheaf cohomology of a topological space vanish? |
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Mar 27 |
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The existence of meromorphic functions on Riemann surfaces Dear Alexandre, you write All Riemann surfaces arising in real life are easily seen to be separable. This is actually always true, also in unreal life, and is a [theorem of Radó](en.wikipedia.org/wiki/…) |
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Mar 25 |
awarded | ● Enlightened |
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Mar 25 |
awarded | ● Nice Answer |
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Mar 24 |
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Existence of non-split vector bundles on smooth projective varieties You are welcome, Piotr. |
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Mar 24 |
accepted | Existence of non-split vector bundles on smooth projective varieties |
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Mar 24 |
answered | Existence of non-split vector bundles on smooth projective varieties |
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Mar 15 |
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cohomological criterion of triviality Dear @Donu, it seems that the huge numbers $n=m=1$ are sufficient to ensure $n,m\gt\gt 1$ :-) |
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Mar 7 |
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How is Munkres pronounced? @Todd: he once told me that some people pronounced it as if it rhymed with Liszt... |
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Feb 26 |
awarded | ● Good Answer |
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Feb 21 |
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equivalence of Grothendieck-style versus Cech-style sheaf cohomology Dear Torsten: of course paracompact implies Hausdorff ! Beware Bourbaki's wrath if you think otherwise:-) |
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Feb 20 |
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Results from Differential Cohomology As an aside, decabillionaires like [Simons](en.wikipedia.org/wiki/James_Harris_Simons) who have written an article in Annals of Mathematis with a mathematician of the calibre of Chern seem to form a rather select club.. |
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Feb 18 |
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How to check if a commutative ring is Gorenstein. Dear @wccanard, you write "Then where would we be [When Sándor dies]?" Answer: in a much worse world. I study mathematics in order to understand what is going on. Pushing buttons and having an answer spit at me teaches me nothing. Long life to Sándor! |
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Feb 18 |
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How to check if a commutative ring is Gorenstein. Dear Qlzqlzuup, I really like your handle for its sheer euphony. If only you could get rid of the two pesky vowels it contains... |
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Feb 16 |
awarded | ● Good Answer |
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Feb 15 |
awarded | ● Favorite Question |
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Feb 15 |
revised |
When is the tensor product of two fields a field? added 324 characters in body |
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Feb 15 |
revised |
When is the tensor product of two fields a field? deleted 6 characters in body |
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Feb 15 |
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When is the tensor product of two fields a field? added 9 characters in body; added 7 characters in body |
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Feb 15 |
revised |
Why is the fundamental group of a compact Riemann surface not free ? added 59 characters in body |
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Jan 31 |
awarded | ● Popular Question |
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Jan 27 |
awarded | ● Popular Question |
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Jan 27 |
awarded | ● Nice Answer |
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Jan 19 |
awarded | ● Enlightened |
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Jan 19 |
awarded | ● Nice Answer |
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Jan 2 |
awarded | ● Notable Question |
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Jan 2 |
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Old books still used @Adam: the title is COMPLEX NUMBERS. What is funny about that? |
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Dec 22 |
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Does a power series converging everywhere on its circle of convergence define a continuous function? Thanks, George! |
