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math.CV2025
Pairs of Clark Unitary Operators on the Bidisk and their Taylor Joint Spectra
Palak Arora, Kelly Bickel, Constanze Liaw +1
We develop a Clark theory for commuting compressed shift operators on model spaces associated with inner functions on the bidisk, which exhibits both similarities and mar…
math.CV2025
Stable Polynomials via Undirected Colored Graphs
Kelly Bickel, Yang Hong
This paper initiates a systematic study of connections between undirected colored graphs and associated two-variable stable polynomials obtained via Cauchy transform-type formulas.…