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14h
answered One-dimension Algebraic groups
Feb
3
awarded  Popular Question
Dec
19
accepted Rational solutions of the Fermat equation $X^n+Y^n+Z^n=1$
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15
awarded  Nice Question
Dec
14
revised Rational solutions of the Fermat equation $X^n+Y^n+Z^n=1$
deleted 172 characters in body
Dec
14
asked Rational solutions of the Fermat equation $X^n+Y^n+Z^n=1$
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comment Pushing-forward morphisms
Nice answer. Thank you.
Dec
6
accepted Pushing-forward morphisms
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awarded  Nice Question
Dec
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awarded  Inquisitive
Dec
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comment Pushing-forward morphisms
Thanks Jason, this is a nice answer +1! It seems that you did not even use anything like non-ramified, right? Unfortunately, I would like such kind of result where $Y$ is not normal (neither is $X$ or $Z$) and also I would also be happy to have something in characteristic $p$ (but maybe it is too much to ask). I would be happy with $f$ and $\psi$ proper (to avoid the counterexamples you gave), and I added the condition of being unramified to remove the case of a morphism $X\to Z$ from a smooth curve to a cusp (for example). But maybe it does not work?
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asked Pushing-forward morphisms
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21
comment Existence of a continuous section
Thanks for the nice comment. I did not know about this result. Are there some examples where $Y=[0,1]$ ?
Nov
21
asked Existence of a continuous section
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16
reviewed Approve Is there a name for this fast growing functions?
Nov
16
reviewed Approve Is a Laskerian ring coherent
Nov
16
comment Is every complex rational algebraic variety simply connected for the Euclidean topology?
Thanks for the nice answer.
Nov
16
accepted Is every complex rational algebraic variety simply connected for the Euclidean topology?
Nov
9
comment Is every complex rational algebraic variety simply connected for the Euclidean topology?
Thanks for the answers.
Nov
8
comment Is every complex rational algebraic variety simply connected for the Euclidean topology?
Thx.... I did not in the title, but after, yes.