Results 11 to 20 of about 76,730 (232)

Fractional resolvent family generated by normal operators

open access: yesAIMS Mathematics, 2023
<abstract><p>The main focus of this paper is on the relationship between the spectrum of generators and the regularity of the fractional resolvent family. We will give a counter-example to show that the point-spectral mapping theorem is not valid for $ \{S_{\alpha}(t)\} $ if $ \alpha \neq 1 $; and we show that if $ \{S_{\alpha}(t)\} $ is ...
openaire   +2 more sources

(F, G, C)-Resolvent Operator Families and Applications

open access: yesMathematics, 2023
In this paper, we introduce and investigate several new classes of (F,G,C)-regularized resolvent operator families subgenerated by multivalued linear operators in locally convex spaces. The known classes of (a,k)-regularized C-resolvent operator-type families are special cases of the classes introduced in this paper. We provide certain applications of (
Vladimir E. Fedorov, Marko Kostić
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DUALITY THEORY OF REGULARIZED RESOLVENT OPERATOR FAMILY

open access: yesJournal of Applied Analysis & Computation, 2011
Let \( k \in C(R^+)\), A be a closed linear densely defined operator in the Banach space \(X\) and \( \{R(t)\}_{t\geq 0} \) be an exponentially bounded \(k\)-regularized resolvent operator families generated by A. In this paper, we mainly study pseudo k-resolvent and duality theory of k-regularized resolvent operator families.
null Jizhou Zhang, null Yeping Li
openaire   +1 more source

Threshold approximations with corrector for the resolvent of a factorized selfadjoint operator family [PDF]

open access: yesSt. Petersburg Mathematical Journal, 2006
In a Hilbert space we consider the family of operators admitting a factorization A(t) = X(t)∗X(t), where X(t) = X0 + tX1, t ∈ R. We suppose that the subspace N = KerA(0) is finite-dimensional. For the resolvent (A(t) + e2I)−1, we obtain an approximation in the operator norm on a fixed interval |t| ≤ t0 for small values of e. This approximation contains
M. Sh. Birman, T. A. Suslina
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Inverse Problem for Evolutionary Equation with the Gerasimov – Caputo Fractional Derivative in the Sectorial Case

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2019
We investigates the unique solvability of a class of linear inverse problems with a time-independent unknown coefficient in an evolution equation in Banach space, which is resolved with respect to the fractional Gerasimov – Caputo derivative.
V.E. Fedorov, A. V. Nagumanova
doaj   +1 more source

Solvability of fractional differential inclusions with nonlocal initial conditions via resolvent family of operators [PDF]

open access: yesInternational Journal of Nonlinear Sciences and Numerical Simulation, 2020
Abstract In this paper, we consider mild solutions to fractional differential inclusions with nonlocal initial conditions. The main results are proved under conditions that (i) the multivalued term takes convex values with compactness of resolvent family of operators; (ii) the multivalued term takes nonconvex values with compactness of ...
Yong-Kui Chang   +2 more
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The dilogarithmic central extension of the Ptolemy-Thompson group via the Kashaev quantization [PDF]

open access: yes, 2016
Quantization of universal Teichm\"uller space provides projective representations of the Ptolemy-Thompson group, which is isomorphic to the Thompson group $T$.
Kim, Hyun Kyu
core   +1 more source

Construction of aggregation operators with noble reinforcement [PDF]

open access: yes, 2007
This paper examines disjunctive aggregation operators used in various recommender systems. A specific requirement in these systems is the property of noble reinforcement: allowing a collection of high-valued arguments to reinforce each other while ...
Beliakov, Gleb, Calvo, Tomasa
core   +1 more source

Approximate Controllability of Infinite-Dimensional Degenerate Fractional Order Systems in the Sectorial Case

open access: yesMathematics, 2019
We consider a class of linear inhomogeneous equations in a Banach space not solvable with respect to the fractional Caputo derivative. Such equations are called degenerate.
Dumitru Baleanu   +3 more
doaj   +1 more source

On an extension of the Trotter-Kato theorem for resolvent families of operators [PDF]

open access: yesJournal of Integral Equations and Applications, 1990
The Trotter-Kato theorem on convergence and approximation of \(C_ 0\)- semigroups, proved in the context of resolvent families of operators is generalized to the Volterra equations \[ R(t)x=x+\int_ 0^ t k(t- s)AR(s)x ds, \qquad x\in D(A) \] \(R(t)\) commutes with the infinitesimal generator \(A\).
openaire   +2 more sources

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