Continuity of the (n,E)-Pseudospectrum in Banach Algebras

Dhara, K; Kulkarni, SH; Seidel, M

Dhara, K (reprint author), Indian Inst Technol Madras, Dept Math, Chennai 600036, Tamil Nadu, India.

INTEGRAL EQUATIONS AND OPERATOR THEORY, 2019; 91 (4):

Abstract

Let E>0, n a non-negative integer, and A a complex unital Banach algebra. Define gamma n:AxC ->[0,infinity] by The (n,E)-pseudospectrum Lambda n......

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