Goffman, Casper; Neugebauer, C. J.; Nishiura, T. Density topology and approximate continuity. (English) Zbl 0101.15502 Duke Math. J. 28, 497-505 (1961). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 43 Documents Keywords:topology PDFBibTeX XMLCite \textit{C. Goffman} et al., Duke Math. J. 28, 497--505 (1961; Zbl 0101.15502) Full Text: DOI