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JOURNALS // Russian Universities Reports. Mathematics // Archive

Russian Universities Reports. Mathematics, 2020 Volume 25, Issue 131, Pages 274–283 (Mi vtamu184)

Scientific articles

To estimating linear functionals values over solutions of systems with aftereffect

V. P. Maksimov

Perm State National Research University

Abstract: For a wide class of linear functional differential systems with Volterra operators, a constructive technique is proposed to obtain estimates of linear functionals values over solutions in conditions of uncertainty of external perturbations. It can be applied to solutions of boundary value problems with arbitrary number of boundary conditions as well as to description of attainability sets in control problems with respect to given on-target functionals. External perturbations are constrained by a given linear inequalities system on the main time segment. The technique is based on the results of general theory of functional differential equations about the solvability of boundary value problems with general linear boundary conditions and the representation of solutions. The problem under consideration is reduced to the generalized moment problem. Therewith the results on the properties of the Cauchy matrix to systems with aftereffect are of essential importance. The general form of functionals allows one to cover many cases being topical in applications such as multipoint, integral ones, as well as hybrids of those.

Keywords: functional differential equations, systems with aftereffect, boundary value problems, estimating solutions.

UDC: 517.929

Received: 06.07.2020

DOI: 10.20310/2686-9667-2020-25-131-274-283



© Steklov Math. Inst. of RAS, 2026