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Characterization of unitary operators by elementary operators and unitarily invariant norms
(Element, 2012-01)
In this work we characterize unitary operators via inequalities of elementary operators with unitarily invariant norms.
Best approximation by diagonal compact operators
(Elsevier Science Inc, 2013-09)
We study the existence and characterization properties of compact Hermitian operators C on a Hilbert space H such that the norm of C is less or equal to that of C + D , for all the real and compact diagonals D in a fixed ...
Galois connection between Lipschitz and linear operator ideals and minimal Lipschitz operator ideals
(Academic Press Inc Elsevier Science, 2019-07)
We establish a relation between Lipschitz operator ideals and linear operator ideals, which fits in the framework of Galois connection between lattices. We use this relationship to give a criterion which allows us to ...
Matrix characterizations of Lipschitz operators on Banach spaces over Krull valued fields
(BELGIAN MATHEMATICAL SOC TRIOMPHE, 2007)
Let K be a complete infinite rank valued field and E a K-Banach space with a countable orthogonal base. In [9] and [10] we have studied bounded (called Lipschitz) operators on E and introduced the notion of a strictly ...
Application of Conservative Power Theory to load and line characterization and revenue metering
(2012-12-14)
This paper proposes a set of performance factors for load characterization and revenue metering. They are based on the Conservative Power Theory, and each of them relates to a specific load non-ideality (unbalance, reactivity, ...
Characterizations of reverse weighted inequalities for maximal operators in Orlicz spaces and Stein's result
(Springer, 2015-12)
We give a characterization of reverse type inequalities on weighted Orlicz spaces of the generalized maximal operator MηMη , associated to a Young function ηη , in terms of an appropriated Dini type condition. Our ...
Positive decompositions of selfadjoint operators
(Birkhauser Verlag Ag, 2010-05)
Given a linear bounded selfadjoint operator a on a complex separable Hilbert space H, we study the decompositions of a as a difference of two positive operators whose ranges satisfy an angle condition. These decompositions ...
Spectral Shorted Operators
(2006)