Width in Higher Rank Arithmetic Groups

Explore how questions about the width of normal subsets in higher rank arithmetic groups can be transformed into questions related to the Congruence Subgroup Problem with respect to non-standard models of these groups in this 44-minute mathematical lecture by Chen Meiri from the Hausdorff Center for Mathematics. Learn about the connections between width problems and the Congruence Subgroup Problem through accessible explanations that require no prior knowledge of higher rank arithmetic groups or CSP, making complex mathematical concepts approachable for a broader audience interested in group theory and arithmetic geometry.