A Banach space operator T X has a left m -inverse (resp., an essential left m -inverse) for some integer m1 if there exists an operator S X (resp., an operator S X and a compact operator ...
A Banach space operator T X has a left m -inverse (resp., an essential left m -inverse) for some integer m1 if there exists an operator S X (resp., an operator S X and a compact operator ... (en)