bio  website  iazd.unihannover.de/… 

location  Hanover, Germany  
age  28  
visits  member for  4 years 
seen  18 hours ago  
stats  profile views  1,678 
I am a postdoc at the Leibniz UniversitÃ¤t Hannover. I do arithmetic geometry and analytic number theory.
2d

accepted  Is any quadric birational to a product of BrauerSeveri varieties? 
2d

comment 
Is any quadric birational to a product of BrauerSeveri varieties?
Thanks to everyone for the answers. Unfortunately I can only accept one. 
2d

comment 
Is any quadric birational to a product of BrauerSeveri varieties?
Nice argument, thanks René! 
2d

answered  Circle method on things other than the integers 
Apr 16 
comment 
Is any quadric birational to a product of BrauerSeveri varieties?
Even though it doesn't answer the question, it is still very interesting to know, thanks! I wonder if this is "the" relationship between BrauerSeveri and quadrics, rather than the relationship of the kind I asked for in my question. 
Apr 16 
comment 
Explicit bound on $\sum_{N\mathfrak p \leq x}\chi(\mathfrak p)\ln(N\mathfrak p)$
I think I see, so you want some explicit upper bound which says $\sum_{N\mathfrak{p} \leq x} \chi(\mathfrak{p}) \leq \textrm{something}$ for all sufficiently large $x$? Can you explain what $n$ is in your big $O$? Also I ask again, do you know a bound of the shape you want in the case where $K = \mathbb{Q}$? 
Apr 16 
asked  Is any quadric birational to a product of BrauerSeveri varieties? 
Apr 16 
comment 
Explicit bound on $\sum_{N\mathfrak p \leq x}\chi(\mathfrak p)\ln(N\mathfrak p)$
Can you explain a bit more what you require? For example there clearly are effective bounds for the sum $\sum_{N\mathfrak{p} \leq x} \chi(\mathfrak{p})$, such as $x/(\log x)$, however I'm guessing that you want something stronger. How strong a bound do you require? Is there some bound you know that holds in the case where $K=\mathbb{Q}$, and you want to know whether it holds in the general case? The bound you have given looks like it is effective, as in your notation there is no implied constant and all the dependencies on the number field and character are there. What else do you require? 
Apr 14 
comment 
Is the group of rational points of an anisotropic absolutely quasisimple algebraic group over a nonarchimedean local field known to be perfect?
Have you tried looking at the book: Platonov, Rapinchuk, Rowen  Algebraic groups and number theory ? I seem to recall that they study the structure of the group of points of algebraic groups over various fields of arithmetic interest. 
Apr 14 
comment 
Is the group of rational points of an anisotropic absolutely quasisimple algebraic group over a nonarchimedean local field known to be perfect?
Do you know an example where this holds? 
Apr 14 
revised 
Is the group of rational points of an anisotropic absolutely quasisimple algebraic group over a nonarchimedean local field known to be perfect?
Added ag and nt tags 
Apr 11 
awarded  Enlightened 
Apr 11 
awarded  Nice Answer 
Apr 10 
revised 
Hasse principle and BrauerManin obstruction for forms of large degree
edited body 
Apr 10 
revised 
Hasse principle and BrauerManin obstruction for forms of large degree
deleted 105 characters in body 
Apr 10 
answered  Hasse principle and BrauerManin obstruction for forms of large degree 
Apr 9 
comment 
Domains with prime ideal theorems
Also search for "zeta functions of groups and rings". 
Apr 2 
awarded  Yearling 
Mar 11 
answered  Automorphisms of a smooth quadric surface $Q\subset\mathbb{P}^{3}$ 
Feb 28 
revised 
Higher dimensional analogue of Thue's equation
deleted 139 characters in body 