Abstract: Unipotent groups form one of the fundamental building blocks in the theory of linear algebraic groups. Over perfect fields, their behavior is very simple. But over imperfect fields, the situation is much more complicated. We will discuss various aspects of these groups, from the fundamental theory to a study of their Picard groups, which appear to play a central role in understanding their behavior. 











-----------------------------------------------------------------------------------------------------------------------------------------------------------














Join Zoom Meeting


https://huji.zoom.us/j/85259021329?pwd=RndGa0VNRjFMQ3hXYkJRb1k5ZGFkQT09

Meeting ID: 852 5902 1329
Passcode: 399582  

----------------------------------------------------------------------------------------------------------------------

Recordings can be found here: http://math.huji.ac.il/~shnidman/Lunchseminars.html