Results 71 to 80 of about 723 (99)

Almost periodic solutions of Volterra difference systems

Demonstratio Mathematica, 2017
We study the existence of an almost periodic solution of discrete Volterra systems by means of fixed point theory. Using discrete variant of exponential dichotomy, we provide sufficient conditions for the existence of an almost periodic solution.
Koyuncuoglu Halis Can, Adıvar Murat
doaj   +1 more source

Discrete-time COVID-19 epidemic model with chaos, stability and bifurcation. [PDF]

Results Phys, 2022
Al-Basyouni KS, Khan AQ.
europepmc   +1 more source

Existence and uniqueness of positive solution for nonlinear difference equations involving p(k)-Laplacian operator

Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2019
In this paper, we deal with the existence of at least one and of at least two positive solutions as well the uniqueness of a positive solution for an anisotropic discrete non-linear problem involving p(k)-Laplacian with Dirichlet boundary value ...
Moghadam Mohsen Khaleghi, Wieteska Renata   +1 more
doaj   +1 more source

Dynamical analysis of a discrete-time COVID-19 epidemic model. [PDF]

Math Methods Appl Sci, 2022
Qadeer Khan A, Tasneem M, Younis BAI, Ibrahim TF.   +3 more
europepmc   +1 more source

Eigenvalue problems for singular multi-point dynamic equations on time scales

Electronic Journal of Differential Equations, 2017
In this article, we study a singular multi-point dynamic eigenvalue problem on time scales. We find existence of positive solutions by constructing the Green's function and studying its positivity eigenvalue intervals. Two examples are given to
Abdulkadir Dogan
doaj  

Continuous and discrete modeling of HIV-1 decline on therapy. [PDF]

J Math Biol, 2020
Akın E, Yeni G, Perelson AS.
europepmc   +1 more source

Internal Limiting Membrane Peeling or Inverted Flap Technique Combined with Air Tamponade in the Treatment of Macular Holes in High Myopia.

Ophthalmic Res, 2023
Zhang K, Yang X, Qi B, Wu X, Wang X, Liu W.   +5 more
europepmc   +1 more source

Lyapunov-type inequality for a higher order dynamic equation on time scales. [PDF]

Springerplus, 2016
Sun T, Xi H.
europepmc   +1 more source

Positive solutions of boundary value problem for singular positone and semi-positone third-order difference equations

Advances in Difference Equations, 2011
This article studies the boundary value problems for the third-order nonlinear singular difference equations Δ 3 u ( i - 2 ) + λ a ( i ) f ( i , u ( i ) ) = 0 , i ∈ [ 2 , T + 2 ] , satisfying five ...
Gai Gongqi, Li Yunhui, Yuan Chengjun
doaj  

Approximation of the multiplicatives on random multi-normed space. [PDF]

J Inequal Appl, 2017
Agarwal RP, Saadati R, Salamati A.
europepmc   +1 more source