Results 11 to 20 of about 2,738 (104)

Abstract Cauchy problems for second order linear differential equations in a Banach space

open access: yesHiroshima Mathematical Journal, 1987
Let A be a closed linear operator in a Banach space X and let Y be a linear manifold of X. Assume that (a) Y is a normed space under a certain norm \(\|| \cdot \||\) which is stronger than the original norm \(\| \cdot \|\) of X; (b) there is \(\omega \geq 0\) such that for each \(\lambda >\omega\), the range \(R(\lambda^ 2-A)\) contains Y, \(R(\lambda^
Takenaka, Tosiharu, Okazawa, Noboru
openaire   +2 more sources

Fundamental solutions for semidiscrete evolution equations via Banach algebras

open access: yesAdvances in Difference Equations, 2021
We give representations for solutions of time-fractional differential equations that involve operators on Lebesgue spaces of sequences defined by discrete convolutions involving kernels through the discrete Fourier transform.
Jorge González-Camus   +2 more
doaj   +1 more source

On the Behaviour of Singular Semigroups in Intermediate and Interpolation Spaces and Its Applications to Maximal Regularity for Degenerate Integro-Differential Evolution Equations

open access: yesAbstract and Applied Analysis, 2013
For those semigroups, which may have power type singularities and whose generators are abstract multivalued linear operators, we characterize the behaviour with respect to a certain set of intermediate and interpolation spaces.
Alberto Favaron, Angelo Favini
doaj   +1 more source

Solvability and completeness of solutions of parabolic differential-operator equations [PDF]

open access: yesМатематичні Студії, 2011
We consider an abstract Cauchy problem for parabolic differential-operator equations in Hilbert spaces. Initial boundary value problems for parabolic equations are reduced to the Cauchy problem for a system of parabolic differential equations.
M. M. Mamedov
doaj  

Reconstructing gene regulatory networks of biological function using differential equations of multilayer perceptrons

open access: yesBMC Bioinformatics, 2022
Background Building biological networks with a certain function is a challenge in systems biology. For the functionality of small (less than ten nodes) biological networks, most methods are implemented by exhausting all possible network topological ...
Guo Mao   +5 more
doaj   +1 more source

Source degenerate identification problems with smoothing overdetermination

open access: yesAdvances in Difference Equations, 2017
We consider degenerate identification problems with smoothing overdetermination in abstract spaces. We establish an identifiability result using a projection method and suitable hypotheses on the operators involved and develop an identification method by
Fadi Awawdeh   +2 more
doaj   +1 more source

On the Bohr transform of almost-periodic solutions for some differential equations in abstract spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
We consider abstract differential equations of the form u′(t)=Au(t)+f(t) or u″(t)=Au(t)+f(t) in Banach spaces X, where f(⋅), ℝ→X is almost-periodic, while A is a linear operator, 𝒟(A)⊂X→X.
Samuel Zaidman
doaj   +1 more source

Asymptotic model of linearly visco-elastic Kelvin–Voigt type plates via Trotter theory

open access: yesAdvances in Difference Equations, 2019
We confirm the study (Licht in C. R., Méc. 341:697–700, 2013) devoted to the quasi-static response for a visco-elastic Kelvin–Voigt plate whose thickness goes to zero.
Yotsawat Terapabkajornded   +2 more
doaj   +1 more source

Evolution Equations with Liouville Derivative on R without Initial Conditions

open access: yesMathematics
New classes of evolution differential equations with the Liouville derivative in Banach spaces are studied. Equations are considered on the whole real line and are not endowed by the initial conditions.
Vladimir E. Fedorov, Nadezhda M. Skripka
doaj   +1 more source

Analysis of segregated boundary-domain integral equations for BVPs with non-smooth coefficients on Lipschitz domains

open access: yesBoundary Value Problems, 2018
Segregated direct boundary-domain integral equations (BDIEs) based on a parametrix and associated with the Dirichlet and Neumann boundary value problems for the linear stationary diffusion partial differential equation with a variable Hölder-continuous ...
Sergey E. Mikhailov
doaj   +1 more source

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