Sales Vallés, Francisco de A. Galois mappings in ordered sets and in lattices. (Spanish) Zbl 0213.29301 Collect. Math. 21, 19-39 (1970). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page MSC: 06A15 Galois correspondences, closure operators (in relation to ordered sets) PDF BibTeX XML Cite \textit{F. de A. Sales Vallés}, Collect. Math. 21, 19--39 (1970; Zbl 0213.29301) Full Text: EuDML OpenURL