bio  website  kellertimo.de/index.html 

location  Germany  
age  
visits  member for  5 years, 4 months 
seen  2 hours ago  
stats  profile views  2,415 
I am a postdoc of Uwe Jannsen interested in arithmetic geometry, especially Arithmetic of Abelian schemes, their $L$functions and étale cohomology.
My two recent articles on the TateShafarevich group and the conjecture of BirchSwinnertonDyer for Abelian schemes over higher dimensional bases over finite fields can be found here:
http://arxiv.org/abs/1410.5293 and http://arxiv.org/abs/1410.5294
1d

answered  Proof of Hensel's lemma by using the deformation theory 
May 21 
awarded  Popular Question 
May 5 
awarded  Nice Answer 
May 1 
comment 
What are the current trends in class field theory?
Also, check out the articles of Alexander Schmidt, mathi.uniheidelberg.de/~schmidt/publ_de.html 
Apr 23 
accepted  learning DeligneLusztig theory 
Apr 23 
comment 
learning DeligneLusztig theory
Thank you very much for this answer! I have edited my original question above: You may assume knowledge of representation theory of finite groups (as in Serre), algebraic groups and étale cohomology. 
Apr 23 
revised 
learning DeligneLusztig theory
added 130 characters in body 
Apr 22 
comment 
learning DeligneLusztig theory
Thank you! Why don't you make your comment into an answer? 
Apr 22 
asked  learning DeligneLusztig theory 
Apr 22 
answered  étale cohomology via Cech cocycles for a quasiprojective scheme 
Mar 30 
answered  Dieudonné modules reference request 
Mar 23 
comment 
Evaluation maps for moduli of stable maps
For properness: If one has maps $f: X \to Y$ and $g: Y \to Z$ with $g \circ f$ proper and $g$ separated, then $f$ is proper. If $g \circ f$ is even projective, then $f$ is projective. (This is Hartshorne's "property $\mathcal{P}$".) 
Mar 22 
comment 
Existence of fine moduli space for curves and elliptic curves
Can you give me a reference for "no automorphisms => representable as an algebraic space"? 
Mar 21 
comment 
$\mathcal{M}_{g,n}$ a scheme for $n \gg 0$?
OK, I see. Thank you! 
Mar 21 
comment 
$\mathcal{M}_{g,n}$ a scheme for $n \gg 0$?
In this thread, Emerton only addresses this question for elliptic curves, and JSE only the question about automorphism groups (not the representability by a scheme). 
Mar 21 
asked  $\mathcal{M}_{g,n}$ a scheme for $n \gg 0$? 
Mar 17 
accepted  applications of Berkovich spaces 
Mar 16 
answered  applications of Berkovich spaces 
Mar 14 
revised 
Equivariant and basic cohomology
edited title 
Mar 13 
asked  applications of Berkovich spaces 