6,966 reputation
11869
bio website kellertimo.de/index.html
location Germany
age
visits member for 5 years, 7 months
seen 9 hours ago

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 Tate-Shafarevich group and the conjecture of Birch-Swinnerton-Dyer 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


Jul
16
awarded  Notable Question
Jul
4
comment Idea of using etale site
"Exactly why this works for the Weil conjectures is a bigger question." Can you elaborate on this?
Jun
24
awarded  Popular Question
Jun
7
awarded  Popular Question
Jun
1
revised A galois group is topologically finitely generated or finitely generated as a $\mathbb{Z}_p$-module
added 30 characters in body
Jun
1
awarded  Fanatic
Jun
1
answered A galois group is topologically finitely generated or finitely generated as a $\mathbb{Z}_p$-module
May
23
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.uni-heidelberg.de/~schmidt/publ_de.html
Apr
23
accepted learning Deligne-Lusztig theory
Apr
23
comment learning Deligne-Lusztig 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 Deligne-Lusztig theory
added 130 characters in body
Apr
22
comment learning Deligne-Lusztig theory
Thank you! Why don't you make your comment into an answer?
Apr
22
asked learning Deligne-Lusztig theory
Apr
22
answered étale cohomology via Cech cocycles for a quasi-projective 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"?