Results 91 to 100 of about 1,449 (134)

Some spectral properties of fourth order differential operator equation

, 2018
We consider boundary value problem for fourth order differential equation with unbounded discrete operator coefficient. One of the boundary conditions involves the λ parameter. The asymptotics of spectrum of corresponding selfadjoint operator is obtained.
N. Aslanova, M. Bayramoglu, Khalig M. Aslanov   +2 more
semanticscholar   +1 more source

Spectrum of the quadratic eigenparameter dependent discrete Dirac equations

, 2014
Let us consider the Boundary Value Problem (BVP) for the discrete Dirac equations an+1yn+1(2)+bnyn(2)+pnyn(1)=λyn(1), an−1yn−1(1)+bnyn(1)+qnyn(2)=λyn(2), n∈N, (γ0+γ1λ+γ2λ2)y1(2)+(β0+β1λ+β2λ2)y0(1)=0, where (an), (bn), (pn) and (qn), n∈N are complex ...
T. Koprubasi
semanticscholar   +1 more source

Study of the asymptotic eigenvalue distribution and trace formula of a second order operator-differential equation

Boundary Value Problems, 2011
The purpose of writing this article is to show some spectral properties of the Bessel operator equation, with spectral parameter-dependent boundary condition.
Aslanova Nigar
doaj  

On a nonlocal problem for fractional differential equations via resolvent operators

, 2014
Using the techniques of approximate solutions, the analytic resolvent method, and the uniform continuity of the resolvent, we discuss the existence of mild solutions for nonlocal fractional differential equations governed by a linear closed operator ...
Lizhen Chen, Z. Fan, Gang Li
semanticscholar   +1 more source

Expansion of eigenvalues of the perturbed discrete bilaplacian. [PDF]

Mon Hefte Math, 2022
Kholmatov SY, Khalkhuzhaev A, Pardabaev M.   +2 more
europepmc   +1 more source

Well-posedness and stability analysis of an epidemic model with infection age and spatial diffusion. [PDF]

J Math Biol, 2023
Walker C.
europepmc   +1 more source

The invertibility for linear combinations of bounded linear operators with closed range

, 2017
In this paper, it is given that the sufficient and necessary conditions for the invertibility of linear combinations of bounded linear operators with closed range. Furthermore, some related results are obtained. Mathematics subject classification (2010):
Guojun Hai, C. Bao, Alatancang Chen
semanticscholar   +1 more source

Operator-norm homogenisation estimates for the system of Maxwell equations on periodic singular structures. [PDF]

Calc Var Partial Differ Equ, 2022
Cherednichenko K, D'Onofrio S.
europepmc   +1 more source

Static spectra and static families of Fredholm-type operators under tensor product

Arab Journal of Basic and Applied Sciences
In this study, we introduce the static spectrum, the Weyl static families, the upper semi-Fredholm static families, and the Browder static families. These families consist of bounded linear operators parameterized by a scalar variable.
Elvis Aponte
doaj   +1 more source

Optimal vaccination: various (counter) intuitive examples. [PDF]

J Math Biol, 2023
Delmas JF, Dronnier D, Zitt PA.
europepmc   +1 more source