M. A. Krasnosel'skii, V. V. Strygin, “Calculation of the rotation of completely continuous vector fields associated with the problem of periodic solutions of differential equations”, Dokl. Akad. Nauk SSSR, 1963, Volume 152, Number 3,Pages <nobr>540

MATHEMATICS

Calculation of the rotation of completely continuous vector fields associated with the problem of periodic solutions of differential equations

M. A. Krasnosel'skii, V. V. Strygin

Voronezh State University

Presented: A. Yu. Ishlinskii
Received: 23.03.1963