Alexander, J. W. On the chains of a complex and their duals. (English) Zbl 0012.23002 Proc. Natl. Acad. Sci. USA 21, 509-511 (1935). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 3 Documents Keywords:Topology PDF BibTeX XML Cite \textit{J. W. Alexander}, Proc. Natl. Acad. Sci. USA 21, 509--511 (1935; Zbl 0012.23002) Full Text: DOI OpenURL