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Barry Simon: (Online) Gap Labelling for Periodic Jacobi Matrices on Trees

Date: 2025-05-29

Time: 17:00 - 18:00

Zoom link: https://kva-se.zoom.us/j/9217561890

Speaker
Barry Simon, Caltech

Abstract
I will present a new and simple proof (published with Banks,
Breuer, Garza Vargas and Seelig)  of Sunada’s gap labelling for periodic
Jacobi matrices on trees.  I will discuss what periodic Jacobi matrices on
trees are and the historical background of the result as well as present the
proof.