BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//UIC
BEGIN:VEVENT
UID:2026041605405620260401T15000020260401T15500069e076683bb94@uic.edu
CATEGORIES:MEETING
STATUS:TENTATIVE
DTSTAMP:20260414T070344
DTSTART:20260401T150000
DTEND:20260401T155000
SUMMARY:Geometry, Topology and Dynamics Seminar: Simplicial volume and isolated, closed totally geodesic submanifolds of codimension one, by Yuping Ruan
DESCRIPTION:Yuping Ruan (Northwestern University): Simplicial volume and isolated, closed totally geodesic submanifolds of codimension one      We show that for any closed Riemannian manifold with dimension at least two and with nonpositive curvature, if it admits an isolated, closed totally geodesic submanifold of codimension one, then its simplicial volume is positive. As a direct corollary of this, for any nonpositively curved analytic manifold with dimension at least three, if its universal cover admits a codimension one flat, then either it has non-trivial Euclidean de Rham factors, or it has positive simplicial volume. This is a joint work with Chris Connell and Shi Wang (arXiv:2410.19981).    Please click here to make changes to, or delete, this seminar announcement. | Event post: https://mscs.uic.edu/events?page_id=5199909
LOCATION:636 SEO   Chicago IL 
CLASS:PRIVATE
END:VEVENT
END:VCALENDAR