USask PIMS Geometry and Physics (GAP) Seminar: Gabe Islambouli

  • Date: 05/03/2023
  • Time: 15:00
Gabe Islambouli, UC Davis

University of Saskatchewan


Multisections and Bridge multisections


In 2016, Gay and Kirby showed that every compact smooth 4-manifold can be decomposed into three standard pieces. A particularly nice feature of this decomposition is that the smooth topology of the 4-manifold can be encoded by curves on a surface. In this talk, we explore the consequences of allowing more pieces in this decomposition, and show that many interesting cut and paste procedures can be carried out by natural mapping classes on the surface. We also explore a related decomposition for knotted surfaces in a 4-manifold.

Other Information: 

Location: Online. Join for Zoom meeting. (Meeting ID: 936 6357 4827; Passcode: qUSaskGAP)


Time: 4pm Central/ 3pm Pacific