Explore the intricate connections between automorphisms of GKM graphs and regular semisimple Hessenberg varieties in this 49-minute lecture by Mikiya Masuda from Osaka Central Advanced Mathematical Institute. Delivered as part of the Workshop on Toric Topology and the Focus Program on Toric Topology, Geometry and Polyhedral Products at the Fields Institute, delve into advanced mathematical concepts and their applications. Gain insights into the speaker's research and findings, scheduled for presentation on August 19, 2024. Access the detailed abstract for a comprehensive overview of the talk's content and its significance in the field of toric topology.