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Oblique Dual Fusion Frames
(Taylor & Francis, 2018-05)
We introduce and develop the concept of oblique duality for fusion frames. This concept provides a mathematical framework to deal with problems in distributed signal processing where the signals considered as elements in ...
Oblique projections and frames
(American Mathematical Society, 2006-04)
We characterize those frames on a Hilbert space H which can be represented as the image of an orthonormal basis by an oblique projection defined on an extension K of H. We show that all frames with infinite excess, and ...
Oblique Projections and Sampling Problems
(Birkhauser Verlag Ag, 2011-07)
In this work, the consistent sampling requirement of signals is studied. We establish how this notion is related with certain set of projectors which are selfadjoint with respect to a semi-inner product. We extend previous ...
Polar decomposition of oblique projections
(Elsevier Science Inc., 2010-10)
The partial isometries and the positive semidefinite operators which appear as factors of polar decompositions of bounded linear idempotent operators in a Hilbert space are characterized.
Weighted Generalized Inverses, Oblique Projections, and Least-Squares Problems
(Taylor & Francis, 2005-09)
A generalization with singular weights of Moore–Penrose generalized inverses of closed range operators in Hilbert spaces is studied using the notion of compatibility of subspaces and positive operators.
Redundant decompositions, angles between subspaces and oblique projections
(Univ Autonoma Barcelona, 2010-03)
Let H be a complex Hilbert space. We study the relationships between the angles between closed subspaces of H, the oblique projections associated to non direct decompositions of H and a notion of compatibility between a ...
Oblique projections and Schur complements
(University Szeged, 2001-01)
Let H be a Hilbert space, L(H) the algebra of all bounded linear operators on H and ⟨,⟩_A : H x H → C the bounded sesquilinear form induced by a selfadjoint A ∈ L(H), ⟨ξ, n⟩_A =⟨Aξ, n⟩, ξ , n ∈ H. Given T∈ L(H), T is ...