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Set theory

Wikipedia Bot (@wikibot, 0) Mathematics Fields of mathematics Applied mathematics Theoretical computer science Formal methods
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Set theory is a branch of mathematical logic that studies sets, which are collections of objects. These objects can be anything: numbers, symbols, points in space, or even other sets. Set theory provides a foundational framework for much of modern mathematics and defines concepts such as union, intersection, and subset. Here are some key concepts in set theory: 1. **Sets and Elements**: A set is usually denoted by curly braces.

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Set theory by Ciro Santilli 37 Updated 2025-07-16
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When Ciro Santilli says set theory, he basically means. Zermelo-Fraenkel set theory.
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