Riguet, Jacques Préliminaires logiques pour une théorie générale des invariants. (French) Zbl 0033.24604 C. R. Acad. Sci., Paris 229, 409-411 (1949). Reviewer: Lorenzen (Bonn) 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) Citations:Zbl 0033.00603; Zbl 0020.20006 PDF BibTeX XML Cite \textit{J. Riguet}, C. R. Acad. Sci., Paris 229, 409--411 (1949; Zbl 0033.24604) OpenURL