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math.FA2023
Crouzeix's conjecture, compressions of shifts, and classes of nilpotent matrices
Kelly Bickel, Georgia Corbett, Annie Glenning +2
This paper studies the level set Crouzeix conjecture, which is a weak version of Crouzeix's conjecture that applies to finite compressions of the shift. Amongst other results, this…
math.FA2023★ 1 cited
Clark measures for rational inner functions II: general bidegrees and higher dimensions
John T. Anderson, Linus Bergqvist, Kelly Bickel +2
We study Clark measures associated with general two-variable rational inner functions (RIFs) on the bidisk, including those with singularities, and with general -variable ration…