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Title: The monoid consisting of Kuratowski operations
Authors: Plewik, Szymon
Walczyńska, Marta
Keywords: Kuratowski operations; Cayley table; isomorphism; monoid
Issue Date: 2013
Citation: Journal of Mathematics, Vol. 2013, (2013), art. no. 289854
Abstract: The paper fills gaps in knowledge about Kuratowski operations which are already in the literature. The Cayley table for these operations has been drawn up. Techniques, using only paper and pencil, to point out all semigroups and its isomorphism types are applied. Some results apply only to topology, and one cannot bring them out, using only properties of the complement and a closure-like operation. The arguments are by systematic study of possibilities.
DOI: 10.1155/2013/289854
ISSN: 2314-4629
Appears in Collections:Artykuły (WNŚiT)

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