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JOURNALS // Itogi Nauki i Tekhniki. Sovremennaya Matematika i ee Prilozheniya. Tematicheskie Obzory // Archive

Itogi Nauki i Tekhniki. Sovrem. Mat. Pril. Temat. Obz., 2025 Volume 239, Pages 25–31 (Mi into1335)

Necessary conditions for a minimum in variational problems with delay in the presence of degeneracie

M. J. Mardanovab, T. K. Melikovbac

a Baku State University
b Institute of Mathematics and Mechanics, Azerbaijan National Academy of Sciences, Baku
c Institute of Control Systems, National Academy of Sciences of Azerbaijan, Baku

Abstract: This article examines the minimum of an extremal in the variational problem with delay under the degeneracy of the Weierstrass condition. We obtain necessary conditions of equality type and inequality type for a strong as well as for a weak local minimum. Necessary conditions of equality and inequality types are obtained for strong as well as weak local minimum. A specific example demonstrating the effectiveness of the results in this paper is provided.

Keywords: variational problem with delayed argument, strong (weak) local minimum, necessary condition type equality (inequality), degeneration at the point

UDC: 517.972

MSC: 49Kxx

DOI: 10.36535/2782-4438-2025-239-25-31



© Steklov Math. Inst. of RAS, 2025