Tudor Ganea, “Upper estimates for the Lyusternik–Shnirelman's category”, Dokl. Akad. Nauk SSSR, 1961, Volume 136, Number 6,Pages <nobr>1273

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Dokl. Akad. Nauk SSSR, 1961 Volume 136, Number 6, Pages 1273–1376 (Mi dan24654)

MATHEMATICS

Upper estimates for the Lyusternik–Shnirelman's category

Tudor Ganea

Institute of Mathematics, Romania

Presented: P. S. Aleksandrov
Received: 14.10.1960