S. Mukherjee

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math.SP2020

Point Spectrum of Periodic Operators on Universal Covering Trees

Jess Banks, Jorge Garza-Vargas, Satyaki Mukherjee

For any multi-graph $G$ with edge weights and vertex potential, and its universal covering tree $T$ , we completely characterize the point spectrum of operators $A_{\mathc…

math.SP2019

A special case of the existential version of the Non Commutative Khintchine inequality

Satyaki Mukherjee

Here we prove the following result. Let $A = {a_{ij}}_{i, j \in N}$ be a bounded operator. Then there exists a signing of $A$ such that $$||A\circ S||_2 < 2||A||_{l_\infty…