Froda-Schechter, M.; Mitrea, A.; Mitrea-Dolea, P. k-rélations de tolerance. (French) Zbl 0472.08003 Publ. Cent. Rech. Math. Pures, Sér. I 15, 13-16 (1980). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page MSC: 08A30 Subalgebras, congruence relations 03E20 Other classical set theory (including functions, relations, and set algebra) 06A15 Galois correspondences, closure operators (in relation to ordered sets) Keywords:k-relation; k-tolerance; equivalence; k-partition; coverings; closure system PDFBibTeX XMLCite \textit{M. Froda-Schechter} et al., Publ. Cent. Rech. Math. Pures, Sér. I 15, 13--16 (1980; Zbl 0472.08003)