Seminar| Institute of Mathematical Sciences
Time: Wednesday, December 24th, 2025,16:00-17:00
Location: RS408, IMS
Speaker: Xueyuan Wan, Chongqing University of Technology
Abstract: We prove that any closed, non-positively curved 4-manifold with non-zero Euler characteristic has positive simplicial volume. As a consequence, Gromov’s conjecture on the positivity of simplicial volume in dimension four is confirmed. This work is joint with Inkang Kim.