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  1. Set (mathematics) - Wikipedia

    A set of polygons in an Euler diagram This set equals the one above since they have the same elements. In mathematics, a set is a collection of different things; the things are elements or …

  2. Introduction to Sets - Math is Fun

    We can come up with all different types of sets.

  3. 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, formulas, …

  4. 21-110: Sets - math.cmu.edu

    Mar 19, 2010 · The concept of a set is one of the most fundamental ideas in mathematics. Essentially, a set is simply a collection of objects. The field of mathematics that studies sets, called set theory, was …

  5. SET Definition & Meaning - Merriam-Webster

    The meaning of SET is to cause to sit : place in or on a seat. How to use set in a sentence.

  6. Set Operations - GeeksforGeeks

    Oct 6, 2025 · The most common set operations, such as union, intersection, disjoint, set difference, etc., will be explored in detail below, including their definitions, examples, and Venn diagrams.

  7. 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 precise and …