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Partial ordering in L-underdeterminate sets. (English) Zbl 0576.06004
The paper introduces a new approach to the consideration of fuzzy relations. Properties of fuzzy relations are defined with respect to a fuzzy equivalence E in the crisp set X considered (the pair (X,E) is called an underdeterminate set). In particular, fuzzy partial order in (X,E) is considered and the existence of a linear extension in (X,E) is proved (a generalization of the Szpilrain theorem).
Reviewer: J.Drewniak

##### MSC:
 06A06 Partial orders, general 08A30 Subalgebras, congruence relations 08A02 Relational systems, laws of composition
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##### References:
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