RUS  ENG
Full version
JOURNALS // Izvestiya Vysshikh Uchebnykh Zavedenii. Matematika // Archive

Izv. Vyssh. Uchebn. Zaved. Mat., 2015 Number 10, Pages 3–18 (Mi ivm9039)

This article is cited in 7 papers

Asymptotic solutions of Fredholm integro-differential equations with rapidly changing kernels and irreversible limit operator

A. A. Bobodzhanov, V. F. Safonov

Chair of Higher Mathematics, Moscow Power Engineering Institute, 14 Krasnokazarmennaya str., Moscow, 111250 Russia

Abstract: We consider a system of singularly perturbed integro-differential Fredholm equations with rapidly changing kernel in the case of irreversible operator of differential part. We develop an algorithm for constructing regularized asymptotic solutions. It is shown that in the presence of rapidly decreasing multiplier in the kernel the original problem is not on the spectrum (i.e., it is solvable for any right-hand side). We study the limit transition (with small parameter tending to zero), and solve the problem of initialization, i.e., the problem of extracting of the source data for which an exact solution to the system tends to the limit at all duration (including a zone of boundary layer).

Keywords: singular perturbation, boundary layer, integro-differential equation, initialization.

UDC: 517.968

Received: 11.03.2014


 English version:
Russian Mathematics (Izvestiya VUZ. Matematika), 2015, 59:10, 1–15

Bibliographic databases:


© Steklov Math. Inst. of RAS, 2025