The family of high rank arithmetic groups is class of groups which is playing  an important role in various areas of mathematics. It includes SL(n,Z) for n>2, SL(n, Z[1/p]) for n>1, their finite index subgroups and many more. A number … Continue reading Colloquium: Tuesday, April 4, 2 pm. Speaker: Alex Lubotzky (Hebrew University). Title: “First order rigidity of high-rank arithmetic groups”.