Fredholm theory on Krein spaces and its application to pseudospectrum
M Zerai Dhahri, A Jeribi… - Linear and Multilinear …, 2024 - Taylor & Francis
In this note, we introduce a notion of the J-kernel of a bounded linear operator on a Krein
space and study the J-Fredholm theory for Krein space operators. Using J-Fredholm theory …
space and study the J-Fredholm theory for Krein space operators. Using J-Fredholm theory …