Explore: Set Theory Congresses

Non-well-founded set theories are variants of axiomatic set theory that allow sets to be elements of themselves and otherwise violate the rule of well-foundedness

been shown to be unprovable in standard set theories such as Zermelo–Fraenkel set theory. Alternative set theories and additional axioms give rise do different

Major subareas include model theory, proof theory, set theory, and recursion theory (also known as computability theory). Research in mathematical logic

governance. People's congresses are the ultimate goal of the movement of peoples on the path to democracy. People's congresses and people's committees

does not belong to the set. By contrast, fuzzy set theory permits the gradual assessment of the membership of elements in a set; this is described with

specifically set theory, the continuum hypothesis (abbreviated CH) is a hypothesis about the possible sizes of infinite sets. It states: There is no set whose

into compact convex sets, which became a standard method in game theory and mathematical economics. His paper was followed by Theory of Games and Economic

discrete and Euclidean geometries, graph theory, group theory, model theory, number theory, set theory, Ramsey theory, dynamical systems, and partial differential

mathematics. He is known for his role in developing Zermelo–Fraenkel axiomatic set theory and his proof of the well-ordering theorem. Furthermore, his 1929 work

"Cultural Marxism" refers to a far-right antisemitic conspiracy theory that misrepresents Western Marxism (especially the Frankfurt School) as being responsible