Vaĭnberg, M. M.; Èngel’son, Ya. L. On the conditional extremum of functionals in linear topological spaces. (Russian) Zbl 0082.10301 Mat. Sb., N. Ser. 45(87), 418-422 (1958). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page MSC: 49-XX Calculus of variations and optimal control; optimization 46-XX Functional analysis Keywords:variational calculus PDFBibTeX XMLCite \textit{M. M. Vaĭnberg} and \textit{Ya. L. Èngel'son}, Mat. Sb., Nov. Ser. 45(87), 418--422 (1958; Zbl 0082.10301)