Menger, Karl The projective space. (English) Zbl 0041.27101 Duke Math. J. 17, 1-14 (1950). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 4 Documents Keywords:Foundations of geometry, noneuclidean geometry PDFBibTeX XMLCite \textit{K. Menger}, Duke Math. J. 17, 1--14 (1950; Zbl 0041.27101) Full Text: DOI