scientific article; zbMATH DE number 6129898

zbMath1265.34155MaRDI QIDQ4901428

Shengui Zhang

Publication date: 24 January 2013

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

periodic solutioncritical pointnonautonomous second-order systemlinear condition

Mathematics Subject Classification ID

Periodic solutions to ordinary differential equations (34C25) Abstract critical point theory (Morse theory, Lyusternik-Shnirel'man theory, etc.) in infinite-dimensional spaces (58E05) Variational principles in infinite-dimensional spaces (58E30)