Thron, Reinhard; Koppitz, J. Closure operators and generating sets. (English) Zbl 0987.06004 Math. Slovaca 51, No. 3, 259-268 (2001). Reviewer: Helmut Länger (Wien) MSC: 06A15 20M12 PDF BibTeX XML Cite \textit{R. Thron} and \textit{J. Koppitz}, Math. Slovaca 51, No. 3, 259--268 (2001; Zbl 0987.06004) Full Text: EuDML OpenURL
Thron, R.; Koppitz, J. On a characterization of closure operators by identities on semigroups. (English) Zbl 0703.20056 Topics in combinatorics and graph theory. Essays in honour of Gerhard Ringel, 685-692 (1990). Reviewer: M.Yamada MSC: 20M05 20M10 20M07 06A15 PDF BibTeX XML OpenURL
Thron, Reinhard n-anti-exchange closure operators. (English) Zbl 0625.06003 Beitr. Algebra Geom. 23, 101-112 (1986). Reviewer: S.Gacsályi MSC: 06A15 54A05 54C60 PDF BibTeX XML Cite \textit{R. Thron}, Beitr. Algebra Geom. 23, 101--112 (1986; Zbl 0625.06003) Full Text: EuDML OpenURL
Thron, Reinhard Characterizations of the anti-exchange closure. (English) Zbl 0565.06005 Beitr. Algebra Geom. 19, 65-74 (1985). Reviewer: V.Meskhi MSC: 06A15 PDF BibTeX XML Cite \textit{R. Thron}, Beitr. Algebra Geom. 19, 65--74 (1985; Zbl 0565.06005) Full Text: EuDML OpenURL
Thron, R. The maximal elements of a partially ordered set and a modification of the theorem of Krein-Milman for closure operators. (English) Zbl 0526.06002 Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Math. 26, 17-25 (1983). MSC: 06A06 06A15 PDF BibTeX XML Cite \textit{R. Thron}, Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Math. 26, 17--25 (1983; Zbl 0526.06002) OpenURL
Thron, Reinhard Über eine Galois-Verbindung zwischen Zielfunktionen und Restriktionsbereichen bei Optimierungsproblemen. (German) Zbl 0522.90102 Seminarber., Humboldt-Univ. Berlin, Sekt. Math. 50, 332-338 (1983). MSC: 90C99 06A15 PDF BibTeX XML Cite \textit{R. Thron}, Seminarber., Humboldt-Univ. Berlin, Sekt. Math. 50, 332--338 (1983; Zbl 0522.90102) OpenURL
Thron, Reinhard Algebraische Hüllenoperatoren, bei denen jede endliche Menge durch die Menge der isolierten Elemente erzeugt wird. (German) Zbl 0519.06004 Beitr. Algebra Geom. 14, 77-85 (1983). MSC: 06A15 08A40 54A05 PDF BibTeX XML Cite \textit{R. Thron}, Beitr. Algebra Geom. 14, 77--85 (1983; Zbl 0519.06004) Full Text: EuDML OpenURL