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  1. Set theory - Wikipedia

    Although objects of any kind can be collected into a set, set theory – as a branch of mathematics – is mostly concerned with those that are relevant to mathematics as a whole. The modern …

  2. Set Theory - GeeksforGeeks

    Jul 23, 2025 · Set theory is a branch of mathematics that deals with collections of objects, called sets. A set is simply a collection of distinct elements, such as numbers, letters, or even …

  3. Set theory | Symbols, Examples, & Formulas | Britannica

    Oct 30, 2025 · Set theory, branch of mathematics that deals with the properties of well-defined collections of objects such as numbers or functions. The theory is valuable as a basis for …

  4. Set Theory - Stanford Encyclopedia of Philosophy

    Oct 8, 2014 · Set theory is the mathematical theory of well-determined collections, called sets, of objects that are called members, or elements, of the set. Pure set theory deals exclusively with …

  5. Sets - Definition, Theory, Symbols, Types, and Examples

    Jul 19, 2024 · What is a set in maths. Learn its theory, types of notations with symbols, Venn diagrams and examples.

  6. Set theory began with Cantor's proof in 1874 that the natural numbers do not have the same cardinality as the real numbers. Cantor's original motivation was to give a new proof of …

  7. Set theory - Math.net

    At its most basic level, set theory describes the relationship between objects and whether they are elements (or members) of a given set. Sets are also objects, and thus can also be related to …

  8. Set Theory is the true study of infinity. This alone assures the subject of a place prominent in human culture. But even more, Set Theory is the milieu in which mathematics takes place …

  9. Sets - Definition, Symbols, Examples | Set Theory - Cuemath

    Sets are defined as a collection of distinct elements. The elements of a set share a common characteristic among them. Learn about sets definition, representation, types, symbols, …

  10. 1.1: Basic Concepts of Set Theory - Mathematics LibreTexts

    Sep 5, 2021 · The objects in a set are called the elements or members of the set. We usually use uppercase letters to denote sets and lowercase letters to denote elements of sets.