Results 11 to 20 of about 6,008 (260)

Bounds for the Davis–Wielandt radius of bounded linear operators [PDF]

open access: yesAnnals of Functional Analysis, 2020
20 ...
Pintu Bhunia   +3 more
openaire   +2 more sources

Continuity of Bounded Linear Operators on Normed Linear Spaces [PDF]

open access: yesFormalized Mathematics, 2018
Summary In this article, using the Mizar system [1], [2], we discuss the continuity of bounded linear operators on normed linear spaces. In the first section, it is discussed that bounded linear operators on normed linear spaces are uniformly continuous and Lipschitz continuous.
Kazuhisa Nakasho   +2 more
openaire   +2 more sources

Ultrametric Fredholm operators and approximate pseudospectrum [PDF]

open access: yesArab Journal of Mathematical Sciences
PurposeThe paper deals with ultrametric bounded Fredholm operators and approximate pseudospectra of closed and densely defined (resp. bounded) linear operators on ultrametric Banach spaces.Design/methodology/approachThe author used the notions of ...
Jawad Ettayb
doaj   +1 more source

ON A TAUBERIAN CONDITION FOR BOUNDED LINEAR OPERATORS [PDF]

open access: yesMathematical Proceedings of the Royal Irish Academy, 2009
Let \(T\) be a bounded linear operator on a complex Banach space \(X\). The operator \(T\) is called power bounded if there is a constant \(C\) such that \(\| T^{n} \| \leq C\) for all \(n = 1,2,\dots\). The main results of the paper are the following. Assume that the operator \(T\) satisfies the Tauberian condition \[ \sup_{n \geq 1} (n + 1) \| (I - T)
Malinen, J., Nevanlinna, O., Yuan, Z.
openaire   +1 more source

Metatimes, random measures and cylindrical random variables

open access: yesModern Stochastics: Theory and Applications, 2021
Metatimes constitute an extension of time-change to general measurable spaces, defined as mappings between two σ-algebras. Equipping the image σ-algebra of a metatime with a measure and defining the composition measure given by the metatime on the domain
Fred Espen Benth, Iben Cathrine Simonsen
doaj   +1 more source

Projections in the spaces of bounded linear operations [PDF]

open access: yesPacific Journal of Mathematics, 1974
For Banach spaces X, Z, let B(X, Z) denote the space of bounded linear operators from X into Z and K(X, Z) (resp. W(X, Z)) the subspace of compact (resp. weakly compact) operators. It is shown that (a) if X contains an isomorph of Co, then K(X, Γ) is not complemented in B(X, Γ), (b) if S is a compact Hausdorff space which is not scattered, then K(C(S),
openaire   +4 more sources

STRUCTURED CONDITION PSEUDOSPECTRA AND STRUCTURED ESSENTIAL CONDITION PSEUDOSPECTRA OF BOUNDED LINEAR OPERATORS ON ULTRAMETRIC BANACH SPACES [PDF]

open access: yesJournal of Algebraic Systems
In this paper, we introduce and study the structured condition pseudospectra and the structured essential condition pseudospectra of bounded linear operators on ultrametric Banach spaces.
Jawad Ettayb
doaj   +1 more source

Linear maps preserving equivalence or asymptotic equivalence on Banach space

open access: yesOpen Mathematics, 2023
Let XX be a complex Banach space with dimension at least two and B(X)B\left(X) the algebra of all bounded linear operators on XX. We show that a bijective linear map Φ\Phi preserves asymptotic equivalence if and only if it preserves equivalence, and in ...
Qin Zijie, Chen Lin
doaj   +1 more source

Bounded linear operators between C∗-algebras [PDF]

open access: yesDuke Mathematical Journal, 1993
Let $u:A\to B$ be a bounded linear operator between two $C^*$-algebras $A,B$. The following result was proved by the second author. Theorem 0.1. There is a numerical constant $K_1$ such that for all finite sequences $x_1,\ldots, x_n$ in $A$ we have $$\leqalignno{&\max\left\{\left\|\left(\sum u(x_i)^* u(x_i)\right)^{1/2}\right\|_B, \left\|\left(\sum
Haagerup, Uffe, Pisier, Gilles
openaire   +3 more sources

The uniform boundedness principle for order bounded operators

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1989
Under appropriate hypotheses on the spaces, it is shown that a sequence of order bounded linear operators which is pointwise order bounded is uniformly order bounded on order bounded subsets.
Charles Swartz
doaj   +1 more source

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