2,625 reputation
1122
bio website tau.ac.il/~borovoi
location Tel Aviv, Israel
age
visits member for 5 years, 1 month
seen yesterday

I am a professor at Tel Aviv University, interested in linear algebraic groups, homogeneous spaces, number theory and nonabelian cohomology.


1d
comment Adeles and twisted adeles
Thank you! Unfortunately, I cannot accept two answers...
Mar
24
accepted Adeles and twisted adeles
Mar
24
comment Adeles and twisted adeles
Dear jmc, many thanks! However, could you please add detais? To what is the tensoring functor left adjoint, and why it follows that this functor commutes with colimits? Please give references and, if possible, detailed explanations!
Mar
24
asked Adeles and twisted adeles
Mar
11
comment The action of the center on the extended Dynkin diagram
Thank you, Jim! This is exactly what I needed!
Mar
11
accepted The action of the center on the extended Dynkin diagram
Mar
10
asked The action of the center on the extended Dynkin diagram
Mar
9
accepted Conjugation of group extensions
Mar
9
comment Conjugation of group extensions
Excellent, Yves! Many thanks!
Mar
8
revised Conjugation of group extensions
deleted 106 characters in body
Mar
8
asked Conjugation of group extensions
Feb
25
comment Exactness on rational points of algebraic groups
In characteristic 0 any morphism is separable and any isogeny is central.
Feb
23
revised Exactness on rational points of algebraic groups
added 4 characters in body
Feb
23
comment Exactness on rational points of algebraic groups
Since you write "Thank you for your answer", consider upvoting the answer.
Feb
23
comment Exactness on rational points of algebraic groups
The paper of Tits on abstract homomorphisms is not relevant here: you deal with algebraic homomorphisms.
Feb
23
comment Exactness on rational points of algebraic groups
The image of a homomorphism of algebraic groups is regarded over an algebraic closure. It is Zariski closed, see Borel's book. By definition, an isogeny is is a surjective homomorphism of algebraic groups with finite kernel.
Feb
23
revised Exactness on rational points of algebraic groups
added 587 characters in body
Feb
23
comment Reductive space & Reductive Lie algebra
What is a reductive space?
Feb
22
revised Exactness on rational points of algebraic groups
added 19 characters in body
Feb
22
revised Exactness on rational points of algebraic groups
edited tags