Schader, M. Distance minimale entre partitions et preordonnances dans un ensemble fini. (French) Zbl 0419.04001 Math. Sci. Hum. 67, 39-47 (1979). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 3 Documents MSC: 03E05 Other combinatorial set theory 05A17 Combinatorial aspects of partitions of integers 06A12 Semilattices Keywords:classification; partitions of a finite set; preorder; semi-lattice; hierarchy; ultrapreorder; Stirling number PDFBibTeX XMLCite \textit{M. Schader}, Math. Sci. Hum. 67, 39--47 (1979; Zbl 0419.04001) Full Text: Numdam EuDML