Organisers: Michel Balazard (CNRS, Laboratoire Poncelet) , Michael Tsfasman (CNRS, Laboratoire Poncelet, Institute for Information Transmission Problems) , Alexey Zykin (Laboratoire Poncelet, State University Higher School of Economics) . ... General Information . ... In the set of all lattices I define subset of principial unstable lattices. ... Comparing this with the measure of all lattices we get some inequality between regulator and discriminant of number field. ... Poncelet Laboratory web page . ...