×

Fuzzy concepts defined via residuated maps. (English) Zbl 0985.54500

Summary: We show how some concepts such as “fuzzy subset” or “fuzzy closed set of a topological space” may be identified with certain maps between complete lattices. Underlying this representation is the fact that the category of closure spaces contains the category of complete lattices and residuated maps as a reflective subcategory. This approach suggests a uniform method for fuzzifying concepts such as “ideals”, “subgroups” and other collections of subsets having a complete lattice structure.

MSC:

54A40 Fuzzy topology
03E72 Theory of fuzzy sets, etc.
06A15 Galois correspondences, closure operators (in relation to ordered sets)

References:

[1] A. Achache: Galois connection of a fuzzy subset. Fuzzy Sets and Systems 8 (1982), 215 - 218. · Zbl 0509.06002 · doi:10.1016/0165-0114(82)90010-0
[2] A. Achache: How to fuzzify a closure space. J. Math. Anal. Appl. ISO (1988), 538 - 544. · Zbl 0648.06005 · doi:10.1016/0022-247X(88)90329-0
[3] A. Achache, A.A.L. Sangalli: Préordres, résiduation et espaces de fermeture. Appl. Discrete Math) · Zbl 0802.06004 · doi:10.1016/0012-365X(92)00517-U
[4] T. S. BIyth, M.F. Janowitz: Residuation Theory. Pergamon Press, Oxford 1972. · Zbl 0301.06001
[5] A. Rosenfeld: Fuzzy groups. J. Math. Anal. Appl. 35 (1971), 512 - 517. · Zbl 0194.05501 · doi:10.1016/0022-247X(71)90199-5
This reference list is based on information provided by the publisher or from digital mathematics libraries. Its items are heuristically matched to zbMATH identifiers and may contain data conversion errors. In some cases that data have been complemented/enhanced by data from zbMATH Open. This attempts to reflect the references listed in the original paper as accurately as possible without claiming completeness or a perfect matching.