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Research Article

Nonlinear maps preserving semi-Fredholm operators with bounded nullity

, &
Pages 1415-1421 | Received 23 Jun 2021, Published online: 02 Jun 2022
 

Abstract

Let be an infinite dimensional complex Banach space, and let be the algebra of all bounded linear operators on . In this paper, given any positive integer n, we provide a characterization of all bijective maps on preserving the difference of semi-Fredholm operators with nullity less than n, and describe completely the structure of these maps.

Mathematics Subject Classification (2020):

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