In this paper, we are concerned with the global structure of radial positive solutions of
boundary value problem div (ϕ N (∇ v))+ λ f (| x|, v)= 0 in B (R), v= 0 on∂ B (R), where ϕ N …

In this paper, by using critical point theory, we obtain some sufficient conditions on the
existence of solutions of the boundary value problem for a 2 n-order ϕ c-Laplacian …

In this paper, we study the spectrum structure of second-order difference operators with sign-
changing weight. We apply the Sylvester inertia theorem to show that the spectrum consists …

The theory of nonlinear difference equations and discrete boundary value problems has
been widely used to study discrete models in many fields such as computer science …

We study the spectrum structure of discrete second‐order Neumann boundary value
problems (NBVPs) with sign‐changing weight. We apply the properties of characteristic …

Let T> 1 be an integer, and let𝕋={1, 2,…, T}. We discuss the spectrum of discrete linear
second‐order eigenvalue problems Δ2u (t− 1)+ λm (t) u (t)= 0, t∈ 𝕋, u (0)= u (T+ 1)= 0 …

In this paper, we consider the existence of three solutions and infinitely many solutions for
discrete fourth-order boundary value problems with multiple parameters under the different …

We apply the continuation theorem of Mawhin to ensure that a fourth‐order nonlinear
difference equation of the form Δ4u (k− 2)− a (k) uα (k)+ b (k) uβ (k)= 0 with periodic …

In this paper, we mainly consider a kind of discrete second-order boundary value problem
with fully nonlinear term. By using the fixed-point index theory, we obtain some existence …

In this paper, we consider the boundary value problem for a 2 n th-order nonlinear difference
equation containing both advance and retardation. By using the critical point theory, some …