Results 1 to 10 of about 25,030 (204)

Analytic Resolving Families for Equations with Distributed Riemann–Liouville Derivatives

open access: yesMathematics, 2022
Some new necessary and sufficient conditions for the existence of analytic resolving families of operators to the linear equation with a distributed Riemann–Liouville derivative in a Banach space are established.
Vladimir E. Fedorov   +3 more
doaj   +1 more source

Integro-differential equations in Banach spaces and analytic resolving families of operators

open access: yesContemporary Mathematics. Fundamental Directions, 2023
We study a class of equations in Banach spaces with a Riemann–Liouville-type integro-differential operator with an operator-valued convolution kernel. The properties of \(k\)-resolving operators of such equations are studied and the class \(\mathcal A_{m,K,\chi}\) of linear closed operators is defined such that the belonging to this class is ...
Fedorov, V. E., Godova, A. D.
openaire   +1 more source

Analytic Resolving Families for Equations with the Dzhrbashyan–Nersesyan Fractional Derivative

open access: yesFractal and Fractional, 2022
In this paper, a criterion for generating an analytic family of operators, which resolves a linear equation solved with respect to the Dzhrbashyan–Nersesyan fractional derivative, via a linear closed operator is obtained.
Vladimir E. Fedorov   +2 more
doaj   +1 more source

Degenerate Multi-Term Equations with Gerasimov–Caputo Derivatives in the Sectorial Case

open access: yesMathematics, 2022
The unique solvability for the Cauchy problem in a class of degenerate multi-term linear equations with Gerasimov–Caputo derivatives in a Banach space is investigated.
Vladimir E. Fedorov, Kseniya V. Boyko
doaj   +1 more source

Generators of Analytic Resolving Families for Distributed Order Equations and Perturbations

open access: yesMathematics, 2020
Linear differential equations of a distributed order with an unbounded operator in a Banach space are studied in this paper. A theorem on the generation of analytic resolving families of operators for such equations is proved.
Vladimir E. Fedorov
doaj   +1 more source

The Lévy–Khintchine type operators with variable Lipschitz continuous coefficients generate linear or nonlinear Markov processes and semigroups [PDF]

open access: yes, 2011
Ito's construction of Markovian solutions to stochastic equations driven by a Lévy noise is extended to nonlinear distribution dependent integrands aiming at the effective construction of linear and nonlinear Markov semigroups and the corresponding ...
Kolokoltsov, V. N. (Vasiliĭ Nikitich)
core   +1 more source

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

Loop corrections for Kaluza-Klein AdS amplitudes [PDF]

open access: yes, 2014
Recently we conjectured the four-point amplitude of graviton multiplets in ${\rm AdS}_5 \times {\rm S}^5$ at one loop by exploiting the operator product expansion of $\mathcal{N}=4$ super Yang-Mills theory.
George L. Delclos (606780)   +10 more
core   +6 more sources

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 Fields with Finite Information Density [PDF]

open access: yes, 2004
The existence of a natural ultraviolet cutoff at the Planck scale is widely expected. In a previous Letter, it has been proposed to model this cutoff as an information density bound by utilizing suitably generalized methods from the mathematical theory ...
A. Kempf   +25 more
core   +1 more source

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