I am a professor at Tel Aviv University, interested in linear algebraic groups, homogeneous spaces, number theory and nonabelian cohomology.
17 Spin group as an automorphism group Jul 29 '13
13 Second nonabelian group cohomology: cocycles vs. gerbes May 10 '13
13 Infiniteness of the Galois cohomology over a number field with coefficients in a finite Galois module May 22
12 Is -1 a sum of 2 squares in a certain field K? May 5 '10