Add to ORKGQuasi-Fredholm relations of degree d is an element of N in Hilbert spaces are defined in terms of conditions on their ranges and kernels. They are completely characterized in terms of an algebraic decomposition with a quasi-Fredholm relation of degree 0 and a nilpotent operator of degree d. The adjoint of a quasi-Fredholm relation of degree d is an element of N is shown to be quasi-Fredholm relation of degree d is an element of N. The class of quasi-Fredholm relations contains the semi-Fredholm relations. Earlier results for quasi-Fredholm operators and semi-Fredholm operators are included.</p
This paper tries to establish a link between topological and algebraic methods in nonlinear analysis...
AbstractWe give a negative answer to the perturbation classes problem: the perturbation class of the...
ABSTRACT. We study the representation theory of the Ding-Iohara algebra $\mathcal{U} $ to find q-ana...
Quasi-Fredholm relations of degree d is an element of N in Hilbert spaces are defined in terms of co...
summary:We introduce and study some operational quantities associated to a space ideal $\Bbb A$. The...
Bibliography: leaves 176-182.Certain properties associated with these classes are stable under small...
In this paper we rst give some properties of strictly quasi-Fredholm linear relations. Next we inves...
AbstractTwo numerical invariants refining the Fredholm index are introduced for any semi-Fredholm op...
We consider continuous operators S +T in Banach spaces, where S is Fredholm and T is quasinuclear. B...
In this paper, new characterizations of the single valued extension property are given, for a bounde...
A class of elliptic operators in ${\mathbb R}^n$ is considered. It is proved that the operators are ...
Abstract. The equation AX = XB implies A∗X = XB ∗ when A and B are nor-mal operators is known as the...
The book is a self-contained comprehensive account of the geometrical properties of nonlinear mappin...
For Hilbert space operators A and B, let δAB denote the generalised derivation δAB(X) = AX − XB and...
In this paper we show that quasisimilar n-tuples of tensor products of (p, k)-quasihyponormal operat...
This paper tries to establish a link between topological and algebraic methods in nonlinear analysis...
AbstractWe give a negative answer to the perturbation classes problem: the perturbation class of the...
ABSTRACT. We study the representation theory of the Ding-Iohara algebra $\mathcal{U} $ to find q-ana...
Quasi-Fredholm relations of degree d is an element of N in Hilbert spaces are defined in terms of co...
summary:We introduce and study some operational quantities associated to a space ideal $\Bbb A$. The...
Bibliography: leaves 176-182.Certain properties associated with these classes are stable under small...
In this paper we rst give some properties of strictly quasi-Fredholm linear relations. Next we inves...
AbstractTwo numerical invariants refining the Fredholm index are introduced for any semi-Fredholm op...
We consider continuous operators S +T in Banach spaces, where S is Fredholm and T is quasinuclear. B...
In this paper, new characterizations of the single valued extension property are given, for a bounde...
A class of elliptic operators in ${\mathbb R}^n$ is considered. It is proved that the operators are ...
Abstract. The equation AX = XB implies A∗X = XB ∗ when A and B are nor-mal operators is known as the...
The book is a self-contained comprehensive account of the geometrical properties of nonlinear mappin...
For Hilbert space operators A and B, let δAB denote the generalised derivation δAB(X) = AX − XB and...
In this paper we show that quasisimilar n-tuples of tensor products of (p, k)-quasihyponormal operat...
This paper tries to establish a link between topological and algebraic methods in nonlinear analysis...
AbstractWe give a negative answer to the perturbation classes problem: the perturbation class of the...
ABSTRACT. We study the representation theory of the Ding-Iohara algebra $\mathcal{U} $ to find q-ana...