# set theory

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Related to Ordinary set theory: Classical set theory

## set theory

n. Mathematics
The study of the properties of sets.

## set theory

n
1. (Mathematics) maths the branch of mathematics concerned with the properties and interrelationships of sets
2. (Logic) logic a theory constructed within first-order logic that yields the mathematical theory of classes, esp one that distinguishes sets from proper classes as a means of avoiding certain paradoxes

## set′ the`ory

n.
the branch of mathematics that deals with relations between sets.
[1940–45]
ThesaurusAntonymsRelated WordsSynonymsLegend:
 Noun 1 set theory - the branch of pure mathematics that deals with the nature and relations of setsmath, mathematics, maths - a science (or group of related sciences) dealing with the logic of quantity and shape and arrangementpure mathematics - the branches of mathematics that study and develop the principles of mathematics for their own sake rather than for their immediate usefulness
Translations
teorie množin
joukko-oppi
תורת הקבוצות
teorija skupova
halmazelmélet
mengjafræði
teoria dos conjuntos

nMengenlehre f

## set theory

n (Math) →
References in periodicals archive ?
Decision theory and probability calculus are based on ordinary set theory which treats presence or absence (membership) in a binary manner.
Ordinary set theory treats membership in a binary manner; an object can be either a member or a nonmember of a set.
He initiated the notion of fuzzy set theory as a modification of the ordinary set theory and at present day there is a tremendous application of fuzzy logic in various field of technology.

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