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math.FA2026
The wanted extension of Fujii and Tsurumaru's formula for the spectral radius of the Bell-CHSH operator
Albrecht Böttcher, Ilya M. Spitkovsky
This paper is motivated by a recent paper of Yuki Fujii and Toyohiro Tsurumaru in which they established a beautiful formula for the spectral radius of the Bell-CHSH operator on fi…
math.FA2017
Similarity between two projections
Albrecht Boettcher, Barry Simon, Ilya Spitkovsky
Given two orthogonal projections P and Q, we are interested in all unitary operators U such that UP=QU and UQ=PU. Such unitaries U have previously been constructed by Wang, Du, and…
math.FA2006★ 5 cited
Generalized Krein algebras and asymptotics of Toeplitz determinants
Albrecht Böttcher, Alexei Karlovich, Bernd Silbermann
We give a survey on generalized Krein algebras and their applications to Toeplitz determinants. Our methods originated in a paper by Mark Krein of 1966, where he sh…