Results 31 to 40 of about 544 (53)
Forum of Mathematics, Pi, 2016 For every $p\in (0,\infty )$ we associate to every metric space $(X,d_{X})$
ASSAF NAOR, GIDEON SCHECHTMAN
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Monotone and convex H*‐algebra valued functions
International Journal of Mathematics and Mathematical Sciences, Volume 19, Issue 3, Page 473-479, 1996., 1995 Classical theorems about monotone and convex functions are generalized to the case of H*‐algebra valued functions. Also there are new examples of a vector measure.
Parfeny P. Saworotnow
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Spectrum perturbations of compact operators in a Banach space
Open Mathematics, 2019 For an integer p ≥ 1, let Γp be an approximative quasi-normed ideal of compact operators in a Banach space with a quasi-norm NΓp(.) and the ...
Gil’ Michael
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Schatten p-norm inequalities related to a characterization of inner product spaces
, 2008 Let $A_1, ... A_n$ be operators acting on a separable complex Hilbert space such that $\sum_{i=1}^n A_i=0$. It is shown that if $A_1, ... A_n$ belong to a Schatten $p$-class, for some $p>0$, then 2^{p/2}n^{p-1} \sum_{i=1}^n \|A_i\|^p_p \leq \sum_{i,j=1 ...
Hirzallah, O. +2 more
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Abstract and Applied Analysis, Volume 1, Issue 2, Page 193-201, 1996., 1996 In this paper we discuss several operator ideal properties for so called Carleson embeddings of tent spaces into specific L q(μ)‐spaces, where μ is a Carleson measure on the complex unit disc. Characterizing absolutely q‐summing, absolutely continuous and q‐integral Carleson embeddings in terms of the underlying measure is our main topic. The presented
Helmut J. Heiming
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p‐representable operators in Banach spaces
International Journal of Mathematics and Mathematical Sciences, Volume 9, Issue 4, Page 653-658, 1986., 1986 Let E and F be Banach spaces. An operator T ∈ L(E, F) is called p‐representable if there exists a finite measure μ on the unit ball, B(E*), of E* and a function g ∈ Lq(μ, F), , such that for all x ∈ E. The object of this paper is to investigate the class of all p‐representable operators.
Roshdi Khalil
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Open Mathematics, 2019 Let E be a generalized Cesáro sequence space defined by weighted means and by using s-numbers of operators from a Banach space X into a Banach space Y.
Bakery Awad A., Mohammed Mustafa M.
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Diagonalization of a self‐adjoint operator acting on a Hilbert module
International Journal of Mathematics and Mathematical Sciences, Volume 8, Issue 4, Page 669-675, 1985., 1985 For each bounded self‐adjoint operator T on a Hilbert module H over an H*‐algebra A there exists a locally compact space m and a certain A‐valued measure μ such that H is isomorphic to L2(μ) ⊗ A and T corresponds to a multiplication with a continuous function. There is a similar result for a commuting family of normal operators.
Parfeny P. Saworotnow
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A simple characterization of the trace‐class of operators
International Journal of Mathematics and Mathematical Sciences, Volume 4, Issue 2, Page 411-412, 1981., 1981 The trace‐class (τc) of operators on a Hilbert space is characterized in terms of existence of certain centralizers.
Parfeny P. Saworotnow
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On critical points of Blaschke products [PDF]
, 2010 We obtain an upper bound for the derivative of a Blaschke product, whose zeros lie in a certain Stolz-type region. We show that the derivative belongs to the space of analytic functions in the unit disk, introduced recently in \cite{FG}.
Favorov, S., Golinskii, L.
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