Seminars: S. A. Melikhov, Topological isotopy and the generalized Sato--Levine invariant [talk in English]

SEMINARS


Geometric Topology Seminar February 3, 2023 16:20, Moscow, Steklov Math Institute (8 Gubkina st.), room 530 + Zoom

Meeting dedicated to P. M. Akhmetiev's 60th birthday
Topological isotopy and the generalized Sato–Levine invariant [talk in English] S. A. Melikhov
https://www.youtube.com/watch?v=AarbIVsqmSI Abstract: We will discuss topological isotopy (i.e. homotopy through topological embeddings) and links in the $3$-sphere that are not isotopic to PL links (2011.01409 and/or something newer). Zoom (new link!): https://zoom.us/j/97302991744 Access code: the Euler characteristic of the wedge of two circles (the password is not the specified phrase but the number that it determines)