Dias da Silva, J. A. On the closed left ideals of the group algebra \(\mathbb CS_ n\). (English) Zbl 0593.20002 Port. Math. 39(1985), 441-453 (1980). MSC: 20C05 16Dxx 06A15 20C30 20E15 16S34 PDF BibTeX XML Cite \textit{J. A. Dias da Silva}, Port. Math. 39, 441--453 (1985; Zbl 0593.20002) Full Text: EuDML OpenURL
Iturrioz, Luisa Orthomodular ordered sets and orthogonal closure spaces. (English) Zbl 0559.06005 Port. Math. 39(1985), 477-488 (1980). Reviewer: P.Ptak MSC: 06A15 06C15 81P10 PDF BibTeX XML Cite \textit{L. Iturrioz}, Port. Math. 39, 477--488 (1985; Zbl 0559.06005) Full Text: EuDML OpenURL
Cousot, Patrick; Cousot, Radhia A constructive characterization of the lattices of all retractions, preclosure, quasi-closure and closure operators on a complete lattice. (English) Zbl 0503.06008 Port. Math. 38(1982), No. 1-2, 185-198 (1979). MSC: 06B23 06A15 PDF BibTeX XML Cite \textit{P. Cousot} and \textit{R. Cousot}, Port. Math. 38, No. 1--2, 185--198 (1982; Zbl 0503.06008) Full Text: EuDML OpenURL
Tamura, Takayuki Semi-closure mappings and cofinal chains. (English) Zbl 0326.06002 Port. Math. 34, 111-117 (1975). MSC: 06A06 06A15 PDF BibTeX XML Cite \textit{T. Tamura}, Port. Math. 34, 111--117 (1975; Zbl 0326.06002) Full Text: EuDML OpenURL
Achache, Achille Structure de l’ensemble des fermetures d’un treillis complet. (French) Zbl 0265.06005 Port. Math. 28, 111-119 (1969). MSC: 06B23 06A15 20L05 PDF BibTeX XML Cite \textit{A. Achache}, Port. Math. 28, 111--119 (1969; Zbl 0265.06005) Full Text: EuDML OpenURL
Egan, H. L. Galois theory for groups. (English) Zbl 0214.27503 Port. Math. 28, 205-214 (1969). MSC: 20F14 06A15 PDF BibTeX XML Cite \textit{H. L. Egan}, Port. Math. 28, 205--214 (1969; Zbl 0214.27503) Full Text: EuDML OpenURL