set theory

(redirected from Ordinary set theory)
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Related to Ordinary set theory: Classical set theory
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Words related to set theory

the branch of pure mathematics that deals with the nature and relations of sets

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However, the calculus of fuzzy set theory is different from that of ordinary set theory for, as can be verified by the above example, the intersection and union operations are not equivalent to the Boolean product and Boolean sum in the case of fuzzy sets.