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Found 96 Documents (Results 1–96)

Convexity and coconvexity of \(S\)-posets. (English) Zbl 1184.20055

Laan, Valdis (ed.) et al., Proceedings of the international conference on semigroups, acts and categories with applications to graphs to celebrate the 65th birthdays of Mati Kilp and Ulrich Knauer, Tartu, Estonia, June 27–30, 2007. Tartu: Estonian Mathematical Society (ISBN 978-9985-9644-2-2/pbk). Mathematics Studies (Tartu) 3, 127-135 (2008).
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Classification of closure operators for categories of topological spaces. (English) Zbl 1078.18006

Gähler, W. (ed.) et al., Categorical structures and their applications. Proceedings of the North-West European category seminar, Berlin, Germany, March 28–29, 2003 . River Edge, NJ: World Scientific (ISBN 981-256-053-X/hbk). 69-98 (2004).
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Closure operators and categorical unions. (English) Zbl 0977.18002

Betti, Renato (ed.) et al., Categorical studies in Italy. Selected papers presented at the meeting “The Italian friends meet Bill Lawvere”, Perugia, Italy, May 1-3, 1997. Palermo: Circolo Matematico di Palermo, Suppl. Rend. Circ. Mat. Palermo, II. Ser. 64, 81-95 (2000).
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Semiregular closure operators and epimorphisms in topological categories. (English) Zbl 0782.54009

Topology, Proc. 5th Int. Meet., Lecce/Italy 1990, Suppl. Rend. Circ. Mat. Palermo, II. Ser. 29, 105-160 (1992).
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