Zelinka, B. Zu einem Problem von S. M. Ulam. (Czech) Zbl 0155.35001 Cas. Mat. 92, 219-220 (1967). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Keywords:set theory × Cite Format Result Cite Review PDF Full Text: DOI EuDML