摘要
The collection of fuzzy subsets of a set X forms a complete lattice that extends the complete lattice P(X) of crisp subsets of X. In this paper, we interpret this extension as a special case of the ＂fuzzification＂ of an arbitrary complete lattice A. We show how to construct a complete lattice F(A, L)-the L-fuzzificatio of A, where L is the valuation lattice- that extends A while preserving all suprema and infima. The ＂fuzzy＂ objects in F(A, L) may be interpreted as the sup-preserving maps from A to the dual of L. In particular, each complete lattice coincides with its 2-fuzzification, where 2 is the two-element lattice. Some familiar fuzzifications (fuzzy subgroups, fuzzy subalgebras, fuzzy topologies, etc.) are special cases of our construction. Finally, we show that the binary relations on a set X may be seen as the fuzzy subsets of X with respect to the valuation lattice P(X).
延伸閱讀
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