Ulam, Stanislaw Über gewisse Zerlegungen von Mengen. (German) Zbl 0007.15203 Fundam. Math. 20, 221-223 (1933). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 Document Keywords:set theory, real functions PDFBibTeX XMLCite \textit{S. Ulam}, Fundam. Math. 20, 221--223 (1933; Zbl 0007.15203) Full Text: DOI EuDML