Impact
~41k
people reached
 0 posts edited
 13 helpful flags
 218 votes cast
14h

answered  Onedimension Algebraic groups 
Feb
3 
awarded  Popular Question 
Dec
19 
accepted  Rational solutions of the Fermat equation $X^n+Y^n+Z^n=1$ 
Dec
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 $X^n+Y^n+Z^n=1$ 
Dec
6 
comment 
Pushingforward morphisms
Nice answer. Thank you. 
Dec
6 
accepted  Pushingforward morphisms 
Dec
4 
awarded  Nice Question 
Dec
4 
awarded  Inquisitive 
Dec
3 
comment 
Pushingforward morphisms
Thanks Jason, this is a nice answer +1! It seems that you did not even use anything like nonramified, 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? 
Dec
3 
asked  Pushingforward morphisms 
Nov
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 
Nov
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. 