Results 21 to 30 of about 149,012 (219)
Boundary Value Problems, 2022 Infected individuals often obtain or lose immunity after recovery in medical studies. To solve the problem, this paper proposes a stochastic SIRS epidemic model with a general incidence rate and partial immunity. Through an appropriate Lyapunov function,
Tao Chen, Zhiming Li
doaj +1 more source
Boundary value problems on manifolds with fibered boundary [PDF]
Mathematische Nachrichten, 2005 AbstractWe define a class of boundary value problems on manifolds with fibered boundary. This class is in a certain sense a deformation between the classical boundary value problems and the Atiyah–Patodi–Singer problems in subspaces (it contains both as special cases).
Savin, Anton, Sternin, Boris
openaire +4 more sources
Boundary Value Problems, 2019 This article concerns the Hamiltonian elliptic system: {−Δφ+V(x)φ=Gψ(x,φ,ψ)in RN,−Δψ+V(x)ψ=Gφ(x,φ,ψ)in RN,φ,ψ∈H1(RN). $$ \textstyle\begin{cases} -\Delta \varphi +V(x)\varphi =G_{\psi }(x,\varphi ,\psi ) & \mbox{in } \mathbb {R}^{N}, \\ -\Delta \psi +V(x)\
Yubo He, Dongdong Qin, Dongdong Chen
doaj +1 more source
The Helfrich boundary value problem [PDF]
Calculus of Variations and Partial Differential Equations, 2019 28 pages, 3 ...
openaire +3 more sources
Maximal regular boundary value problems in Banach-valued weighted space [PDF]
, 2005 This study focuses on nonlocal boundary value problems for elliptic ordinary and partial differential-operator equations of arbitrary order, defined in Banach-valued function spaces. The region considered here has a varying bound and depends on a certain
Shakhmurov, Veli B. +8 more
core +1 more source
Boundary Value Problems, 2009 We consider the existence of countably many positive solutions for nonlinear nth-order three-point boundary value problem u(n)(t)+a(t)f(u(t))=0, t∈(0,1), u(0)=αu(η), u′(0)=⋯=u(n−2)(0)=0, u(1)=βu(η),
Yanping Guo, Yude Ji
doaj +1 more source
Global dynamics for an SVEIR epidemic model with diffusion and nonlinear incidence rate
Boundary Value Problems, 2022 In this paper, we investigate an SVEIR epidemic model with reaction–diffusion and nonlinear incidence. We establish the well-posedness of the solutions and the basic reproduction number R 0 $\mathfrak{R}_{0}$ .
Jinhu Xu
doaj +1 more source
Spurious solutions for discrete superlinear boundary value problems
, 1982 Beyn W-J, Lorenz J. Spurious solutions for discrete superlinear boundary value problems. Computing.
Beyn, Wolf-Jürgen, Lorenz, Jens
core +1 more source
Boundary Value Problems, 2018 We consider a one-dimensional perturbation of the convolution integro-differential operator of arbitrary order on a finite interval. The inverse problem of recovering the convolution component from the spectrum is studied, provided that the perturbation ...
S. A. Buterin, S. V. Vasiliev
doaj +1 more source
Boundary Value Problems, 2020 In this paper we consider singular Sturm–Liouville problems with eigenparameter dependent boundary conditions and two singular endpoints. The spectrum of such problems can be approximated by those of the inherited restriction operators constructed.
Maozhu Zhang, Kun Li, Hongxiang Song
doaj +1 more source