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math.OA2024★ 1 cited
Multivariable pseudospectrum in -algebras
Alexander Cerjan, Vasile Lauric, Terry A. Loring
We look at various forms of spectrum and associated pseudospectrum that can be defined for noncommuting -tuples of Hermitian elements of a -algebra. The emphasis is on theo…
math.OA2023★ 7 cited
Even spheres as joint spectra of matrix models
Alexander Cerjan, Terry A. Loring
The Clifford spectrum is a form of joint spectrum for noncommuting matrices. This theory has been applied in photonics, condensed matter and string theory. In applications, the Cli…