We obtain asymptotic representations for one class of solutions of a second-order difference equation with power nonlinearity.
Statement of the Problem and Main ResultsWe consider the second-order difference equationand p n is positive for n ∈ N. For this equation, we investigate the problem of the existence and asymptotic representation of P (λ)-solutions defined as follows: Definition 1.1. A solution (y n ) +∞ n=1 of Eq. (1.1) is called a P (λ)-solution if the following relations are true: lim n→+∞ y n = y 0 , y 0 = ⎧ ⎨ ⎩ either 0 or ±∞, lim n→+∞ nΔ 2 y n Δy n = λ. (1.2)Equation (1.1) is a discrete analog of the well-known differential equation of the Emden-Fowler type, whose asymptotic properties are fairly well studied in [1][2][3][4][5][6]. In the present paper, we attempt to generalize the method of investigation presented in [6] to an analogous class of difference equations, complementing the results of [7,8], where, for an equation of the form (1.1), conditions for the existence of solutions asymptotically equivalent to cn and solutions belonging to the classes of functions c 0 and l 2 were obtained.We formulate the obtained results in the form of theorems. Theorem 1.1. Let +∞ m=1 mp m = +∞.
We obtain asymptotic representations for one class of solutions of a second-order differential equation with nonlinearity close to an exponential.
Statement of the Problem and Main ResultsConsider the second-order differential equation(1.2) and the functions L k : (0, +∞) → R \ {0} and F k : I → R are defined by the recurrence relations L r (z) = ln |L r−1 (z)| , L 1 (z) = ln z, z ∈ (0, +∞), F r (y) = L r−1 (ϕ(y)) (F r−1 (y) − 1) , F 1 (y) = ϕ (y)ϕ(y) ϕ 2 (y) , r = 2, . . . , k.(1.3)In the present paper, we investigate the asymptotic behavior of solutions of Eq. (1.1) defined in the left neighborhood of the point ω and such that lim t→ω y(t) = y 0 .The asymptotic behavior of solutions of Eq. (1.1) that belong to the class of so-called P ω (λ)-functions, where the function ϕ(y) satisfies the limit relation lim y→y 0 F 1 (y) = γ, γ ∈ R\{0},
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.