logic, positive set theory is the name for a class of alternative set theories in which the axiom of comprehension holds for at least the positive formulas...

set theory Morse–Kelley set theory Tarski–Grothendieck set theory Ackermann set theory Type theory New Foundations Positive set theory Internal set theory...

In set theory, a universal set is a set which contains all objects, including itself. In set theory as usually formulated, it can be proven in multiple...

Appendix:Glossary of set theory in Wiktionary, the free dictionary. This is a glossary of terms and definitions related to the topic of set theory. Contents: ...

Naive set theory is any of several theories of sets used in the discussion of the foundations of mathematics. Unlike axiomatic set theories, which are...

set theory Kripke–Platek set theory with urelements Morse–Kelley set theory Naive set theory New Foundations Pocket set theory Positive set theory S (Boolos...

Foundations and positive set theory use different restrictions of the axiom of comprehension of naive set theory. The Alternative Set Theory of Vopenka makes...

urelements Morse–Kelley set theory Naive set theory New Foundations Positive set theory Zermelo–Fraenkel set theory Zermelo set theory Set (mathematics) Simple...

is only one empty set. Sets are ubiquitous in modern mathematics. Indeed, set theory, more specifically Zermelo–Fraenkel set theory, has been the standard...

stable level of happiness despite major positive or negative events or life changes. According to this theory, as a person makes more money, expectations...

are examples of finite sets. An example of an infinite set is the set of positive integers {1, 2, 3, 4, ...}. As a relation, set membership must have a...

first-order theory is given by a set of axioms in some language. This entry lists some of the more common examples used in model theory and some of their...

empty set or void set is the unique set having no elements; its size or cardinality (count of elements in a set) is zero. Some axiomatic set theories ensure...

The measure of a set is 1 if it contains the point a {\displaystyle a} and 0 otherwise. Other 'named' measures used in various theories include: Borel measure...

The theory of positive disintegration (TPD) is an idea of personality development developed by Polish psychologist Kazimierz Dąbrowski. Unlike mainstream...

Axiomatic constructive set theory is an approach to mathematical constructivism following the program of axiomatic set theory. The same first-order language...

The negations or additive inverses of the positive natural numbers are referred to as negative integers. The set of all integers is often denoted by the...

non-well-founded, finitely axiomatizable set theory conceived by Willard Van Orman Quine as a simplification of the theory of types of Principia Mathematica...

(1924) described regeneration in a set of electronic amplifiers as a case where the "feed-back" action is positive in contrast to negative feed-back action...

ordered sets by building upon the concepts of set theory, arithmetic, and binary relations. Orders are special binary relations. Suppose that P is a set and...

In the mathematical field of set theory, an ideal is a partially ordered collection of sets that are considered to be "small" or "negligible". Every subset...

In operator theory, a branch of mathematics, a positive-definite kernel is a generalization of a positive-definite function or a positive-definite matrix...

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

The two-factor theory (also known as Herzberg's motivation-hygiene theory and dual-factor theory) states that there are certain factors in the workplace...

computability theory overlaps with proof theory and effective descriptive set theory. Basic questions addressed by computability theory include: What...

more precisely in measure theory, an atom is a measurable set which has positive measure and contains no set of smaller positive measures. A measure which...

An Axiomatization for the System of Positive Integers) In some set theories, e.g., New Foundations, a universal set exists and Russel's paradox cannot...

mathematics, particularly set theory, a finite set is a set that has a finite number of elements. Informally, a finite set is a set which one could in principle...

example being the neighborhood filter. Filters appear in order theory, model theory, and set theory, but can also be found in topology, from which they originate...

small set may refer to: Small set (category theory) Small set (combinatorics), a set of positive integers whose sum of reciprocals converges Small set, an...