Results 51 to 60 of about 450 (171)
A new method for comparing two Norm Hilbert spaces and their operators
, 2011 The paper deals with operators on Norm Hilbert spaces over a Krull valued field K. By using carefully selected equivalent norms (i) the perturbation theory of Fredholm operators (see Ochsenius and Schikhof (2010) [7]) is completed, and (ii) new matrix ...
H. Ochsenius +4 more
core +1 more source
Toeplitz operators on Hardy spaces [PDF]
, 2019 In the present thesis we establish Banach space counterparts for several results known for Toeplitz operators on Hardy-Hilbert spaces. We use methods of Didas, Eschmeier and Everard to construct Toeplitz projections for Toeplitz operators acting on a ...
Kraemer, Daniel
core +1 more source
A real variable characterization of Gromov hyperbolicity of flute surfaces [PDF]
, 2008 23 pages, 1 figure.-- MSC2000 codes: 41A10, 46E35, 46G10.-- ArXiv pre-print available at: http://arxiv.org/abs/0806.0093Previously presented as Communication at International Congress of Mathematicians 2006 (ICM2006, Madrid, Spain, Aug 22-30, 2006 ...
Tourís, Eva +2 more
core
, 2011 The problems of perturbation and expression for the generalized inverses of closed linear operators in Banach spaces and for the Moore–Penrose inverses of closed linear operators in Hilbert spaces are studied.
Huang, Qianglian +3 more
core +1 more source
A Characterization of Extremal Sets in Hilbert Spaces
, 2002 We give a characterization of extremal sets in Hilbert spaces that generalizes a classical theorem of H. W. E. Jung. We investigate also the behaviour of points near to the circumsphere of such a set with respect to the Kuratowski and Hausdorff measures of non-compactness.
NguyenKhac, V., NguyenVan, K.
openaire +2 more sources
Isotonicity of the Metric Projection and Complementarity Problems in Hilbert Spaces
, 2017 © 2017 Springer Science+Business Media, LLC In this paper, as the extension of the isotonicity of the metric projection, the isotonicity characterizations with respect to two arbitrary order relations induced by cones of the metric projection operator ...
Lishan Liu +5 more
core +1 more source
Characterization of Hilbert space manifolds revisited
Topology and its Applications, 1986 This is a survey paper on manifolds modelled on \(s=(0,1)^{\infty}\), the product of countably many open intervals. The authors present an approach leading to the characterization of s-manifolds that relies exclusively on the geometry of s. They refine the notion of Z-set and correct a misconception that has surfaced in characterizing manifolds in the ...
Bestvina, Mladen +3 more
openaire +1 more source
Mixing sequences in Hilbert spaces
, 1986 A general setup is provided for theorems of the Blum-Hanson type. Notions of strongly and weakly mixing sequences of elements in a Hilbert space are defined, and equivalent characterizations are derived.
Daniel Berend, Vitaly Bergelson
core +1 more source
A characterization of the range of a bounded linear transformation in Hilbert space [PDF]
Proceedings of the American Mathematical Society, 1980 It is a theorem of Smul’jan and Mac Nerney that for B a bounded linear transformation from a complete complex inner product space { S
openaire +2 more sources
K-theory for group C*-algebras
, 2011 These notes are based on a lecture course given by the first author in the Sedano Winter School on K-theory held in Sedano, Spain, on January 22-27th of 2007.
Baum, Paul, Sanchez-Garcia, Ruben
core +1 more source