Add to ORKGIn this paper we consider the notion of n-isometry on a Banach space. We determine the existence of non-isometric 2-isometries for the classes of weighted shifts and composition operators on lp spaces. We also address similar questions for weighted composition operators acting on the space of scalar valued continuous functions, defined on a compact Hausdorff topological space. © Bolyai Institute, University of Szeged
The classical Banach-Stone theorem characterizes linear surjective isometries between C(K)-spaces. T...
AbstractWe solve the following three questions concerning surjective linear isometries between space...
The purpose of this article is to study the isometries between vector-valued absolutely continuous f...
Abstract. In this paper we extend previous results of Banach, Lamperti and Yeadon on isometries of L...
Fundamental to the study of any mathematical structure is an understanding of its symmetries. In the...
In this paper we deal with surjective linear isometries between spaces of scalar-valued absolutely c...
For X a compact Hausdorff topological space and F a strictly convex and reflexive Banach space we ch...
For X a compact Hausdorff topological space and F a strictly convex and reflexive Banach space we ch...
We consider abstract Banach spaces of analytic functions on general bounded domains that satisfy onl...
Abstract. Suppose X and Y are locally compact Hausdorff spaces, E and F are Banach spaces and F is s...
There are many characterizations of isometric operators between Ba-nach spaces. In this paper we giv...
Abstract. By the classical Banach-Stone Theorem any surjective isometry between Banach spaces of bou...
Let be function algebras (or more generally, dense subspaces of uniformly closed function algebras) ...
We study necessary and sufficient conditions on a bounded operator T defined on the Hilbert space L-...
We study necessary and sufficient conditions on a bounded operator T defined on the Hilbert space L-...
The classical Banach-Stone theorem characterizes linear surjective isometries between C(K)-spaces. T...
AbstractWe solve the following three questions concerning surjective linear isometries between space...
The purpose of this article is to study the isometries between vector-valued absolutely continuous f...
Abstract. In this paper we extend previous results of Banach, Lamperti and Yeadon on isometries of L...
Fundamental to the study of any mathematical structure is an understanding of its symmetries. In the...
In this paper we deal with surjective linear isometries between spaces of scalar-valued absolutely c...
For X a compact Hausdorff topological space and F a strictly convex and reflexive Banach space we ch...
For X a compact Hausdorff topological space and F a strictly convex and reflexive Banach space we ch...
We consider abstract Banach spaces of analytic functions on general bounded domains that satisfy onl...
Abstract. Suppose X and Y are locally compact Hausdorff spaces, E and F are Banach spaces and F is s...
There are many characterizations of isometric operators between Ba-nach spaces. In this paper we giv...
Abstract. By the classical Banach-Stone Theorem any surjective isometry between Banach spaces of bou...
Let be function algebras (or more generally, dense subspaces of uniformly closed function algebras) ...
We study necessary and sufficient conditions on a bounded operator T defined on the Hilbert space L-...
We study necessary and sufficient conditions on a bounded operator T defined on the Hilbert space L-...
The classical Banach-Stone theorem characterizes linear surjective isometries between C(K)-spaces. T...
AbstractWe solve the following three questions concerning surjective linear isometries between space...
The purpose of this article is to study the isometries between vector-valued absolutely continuous f...