In this paper we shall consider the relationships between a local version of the single valued
extension property of a bounded operator T∈ L (X) on a Banach space X and some …

An operator T which maps a Banach space X into itself has the single valued extension
property if the only analytic function f which satisfies (λI− T) f (λ)= 0 is f= 0. Clearly the point …

Let Z be a fixed separable operator space, X⊂ Y general separable operator spaces, and T:
X→ Z a completely bounded map. Z is said to have the Complete Separable Extension …

Christoph Schmoeger ON A CLASS OF GENERALIZED FREDHOLM OPERATORS, I 1.
Terminology and introduction Throughout this paper X deno Page 1 DEMONSTRATIO …

Extension theory of differential operators I<link href='#fn1'></link> Page 1 COMMUNICATIONS
ON PURE AND APPLIED MATHEMATICS, VOL. XI, 23-65 (1958) Extension Theory of …

A localized version of the single-valued extension property is studied, for a bounded linear
operator T acting on a Banach space and its adjoint T⁎, at the points λ0∈ C such that λ0I− T …

Several operational quantities have appeared in the literature characterizing upper semi-
Fredholm operators. Here we show that these quantities can be divided into three classes, in …

Christoph Schmoeger ON A CLASS OF GENERALIZED FREDHOLM OPERATORS, II 1.
Terminology and introduction The present paper is a cont Page 1 OEMONSTRATIO …

Assume $ T $ is a bounded linear operator on some Banach space $ Y $, and that $ T $ has
a bounded extension $\bar T $ on another space. In general almost nothing can be said …

In this paper we give two counterexamples to the closedness of the sum of two sectorial
operators with commuting resolvents. In the first example the operators are defined on an L …