CUBO, A Mathematical Journal, Volume (17), No (1), Year (2015-3) , Pages (29-40)

Title : ( Maps preserving Fredholm or semi-Fredholm elements relative to some ideal )

Authors: mohadeseh rostamani , Shirin Hejazian ,

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We consider the Calkin algrbra C(A) and the Fredholm theory in a Banach algebra A, relative to some fixed ideal F of A. Our aim is to study linear maps between unital Banach algebras A and B which are surjective up to the inessential elements relative to F, and preserve Fredholm or semi-Fredholm elements in both directions or equivalently different relatively essential spectral sets.

Keywords

, Linear Preservers, Fredholm element, semi-Fredholm element, inessential ideal, relative Calkin
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@article{paperid:1049117,
author = {Rostamani, Mohadeseh and Hejazian, Shirin},
title = {Maps preserving Fredholm or semi-Fredholm elements relative to some ideal},
journal = {CUBO, A Mathematical Journal},
year = {2015},
volume = {17},
number = {1},
month = {March},
issn = {0716-7776},
pages = {29--40},
numpages = {11},
keywords = {Linear Preservers; Fredholm element; semi-Fredholm element; inessential ideal; relative Calkin algebra},
}

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%0 Journal Article
%T Maps preserving Fredholm or semi-Fredholm elements relative to some ideal
%A Rostamani, Mohadeseh
%A Hejazian, Shirin
%J CUBO, A Mathematical Journal
%@ 0716-7776
%D 2015

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