Lectures at the Mathematical Seminar on Homotopic Topology
Basic concepts of homology and obstruction theory

V. G. Boltyanskii


UDC: 513.83

MSC: 57Txx, 57N60, 55S35, 57S05

Received: 16.03.1966

 English version: Russian Mathematical Surveys, 1966, 21:5, 113–132

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