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Variational quantum evolution equation solver [PDF]

open access: yesScientific Reports, 2022
Variational quantum algorithms offer a promising new paradigm for solving partial differential equations on near-term quantum computers. Here, we propose a variational quantum algorithm for solving a general evolution equation through implicit time ...
Fong Yew Leong   +2 more
doaj   +2 more sources

Stability of well-posed stochastic evolution equation [PDF]

open access: yesHeliyon, 2019
The stability of a non-classical stochastic evolution equation with impulsive and nonlocal initial conditions is examined from a general perspective.
S.A. Bishop, S.A. Iyase, H.I. Okagbue
doaj   +2 more sources

Finite-Approximate Controllability of Riemann–Liouville Fractional Evolution Systems via Resolvent-Like Operators

open access: yesFractal and Fractional, 2021
This paper presents a variational method for studying approximate controllability and infinite-dimensional exact controllability (finite-approximate controllability) for Riemann–Liouville fractional linear/semilinear evolution equations in Hilbert spaces.
Nazim I. Mahmudov
doaj   +1 more source

ON PROPER TIME OF THE SOURCE OF A STRONG EARTHQUAKE

open access: yesГеодинамика и тектонофизика, 2023
The physics of earthquakes was contriubuted to by the concept of proper time of the source of a strong earthquake, which is different from universal (calendar) time. The earlier idea of proper time was implicit and has been considered only in relation to
A. V. Guglielmi   +3 more
doaj   +1 more source

Solvability of the abstract evolution equations in Ls-spaces with critical temporal weights

open access: yesOpen Mathematics, 2021
This paper deals with the abstract evolution equations in Ls{L}^{s}-spaces with critical temporal weights. First, embedding and interpolation properties of the critical Ls{L}^{s}-spaces with different exponents ss are investigated, then solvability of ...
Zhang Qinghua, Tan Zhizhong
doaj   +1 more source

Evolution Equations in Hilbert Spaces via the Lacunae Method

open access: yesFractal and Fractional, 2022
In this paper, we consider evolution equations in the abstract Hilbert space under the special conditions imposed on the operator at the right-hand side of the equation.
Maksim V. Kukushkin
doaj   +1 more source

Note on the spectral theorem for unbounded non-selfadjoint operators

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2022
In this paper, we deal with non-selfadjoint operators with the compact resolvent. Having been inspired by the Lidskii idea involving a notion of convergence of a series on the root vectors of the operator in a weaker – Abel-Lidskii sense, we proceed ...
Kukushkin, M.V.
doaj   +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

Controllability for Fractional Evolution Equations with Infinite Time-Delay and Non-Local Conditions in Compact and Noncompact Cases

open access: yesAxioms, 2023
The goal of this dissertation is to explore a system of fractional evolution equations with infinitesimal generator operators and an infinite time delay with non-local conditions. It turns out that there are two ways to regulate the solution.
Ahmed Salem, Kholoud N. Alharbi
doaj   +1 more source

Inverse Problems for Degenerate Fractional Integro-Differential Equations

open access: yesMathematics, 2020
This paper deals with inverse problems related to degenerate fractional integro-differential equations in Banach spaces. We study existence, uniqueness and regularity of solutions to the problem, claiming to extend well known studies for the case of non ...
Mohammed Al Horani   +3 more
doaj   +1 more source

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