HEBREW UNIVERSITY Amitsur Algebra Seminar ---------------------------------- Time: Thursday, Oct 25 , 12:00-13:15 Place: math 209 Speaker: Erez Lapid (HUJI) Title: an approximation principle for congruence subgroups Abstract: A well-known theorem of Nori (which was later on generalized by Larsen-Pink) asserts that, roughly speaking, the subgroups of GL_n(F_p) are ``not far'' from algebraic. I will tell about a result of the same spirit, but much cruder, for congruence subgroups of G(Z_p) where G is a reductive group over the p-adic integers. Some applications will be discussed as well. This is joint work with Tobias Finis. You are cordially invited! <http://math.huji.ac.il/amitsur.html> --------------------------------------------------------- Technion Math Net-2 (TECHMATH2) Editor: Michael Cwikel <techm@math.technion.ac.il> Announcement from: Gili Schul <gili.schul@mail.huji.ac.il>