Kan, Daniel M. Abstract homotopy. I. (English) Zbl 0065.38601 Proc. Natl. Acad. Sci. USA 41, 1092-1096 (1955). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 6 ReviewsCited in 43 Documents Keywords:topology × Cite Format Result Cite Review PDF Full Text: DOI