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# set theory

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noun

the branch of mathematics that deals with relations between sets.

QUIZ

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## Origin of set theory

First recorded in 1940â€“45

## Words nearby set theory

Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, Â© Random House, Inc. 2023

## How to use set theory in a sentence

For those ready to venture into a little set theory, read on.

They are uncommitted to any set theory and are relatively free from local European feelings.

## British Dictionary definitions for set theory

set theory

noun

maths the branch of mathematics concerned with the properties and interrelationships of sets

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

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
Â© William Collins Sons & Co. Ltd. 1979, 1986 Â© HarperCollins
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