EuDML | Browse

Loading [MathJax]/extensions/MathZoom.js

Skip to main content (access key 's'), Skip to navigation (access key 'n'), Accessibility information (access key '0')

Subjects
46-XX Functional analysis
46Cxx Inner product spaces and their generalizations, Hilbert spaces
46C07 Hilbert subspaces (= operator ranges); complementation (Aronszajn, de Branges, etc.)

Items

All a b c d e f g h i j k l m n o p q r s t u v w x y z Other

Page 1

Displaying 1 – 4 of 4

Almost surjective ε-isometries of Banach spaces

I. A. Vestfrid (2004)

Colloquium Mathematicae

We investigate Hyers-Ulam stability of non-surjective ε-isomeries of Banach spaces. We also pose and discuss an open problem.

Embeding weakly compact sets

Reif, J. (1976)

Abstracta. 4th Winter School on Abstract Analysis

Generalized atomic subspaces for operators in Hilbert spaces

Prasenjit Ghosh, Tapas Kumar Samanta (2022)

Mathematica Bohemica

We introduce the notion of a $g$ -atomic subspace for a bounded linear operator and construct several useful resolutions of the identity operator on a Hilbert space using the theory of $g$ -fusion frames. Also, we shall describe the concept of frame operator for a pair of $g$ -fusion Bessel sequences and some of their properties.

On a completion of prehilbertian spaces.

Ambrozie, C.-G. (2005)

Portugaliae Mathematica. Nova Série

Currently displaying 1 – 4 of 4

Page 1