In mathematical logic, model theory is the study of the relationship between formal theories (a collection of sentences in a formal language expressing...

Finite model theory is a subarea of model theory. Model theory is the branch of logic which deals with the relation between a formal language (syntax)...

Measure theory — Model theory — Module theory — Morse theory — Nevanlinna theory — Number theory — Obstruction theory — Operator theory — Order theory — PCF...

models are central to philosophy of science. In scholarly research and applied science, a model should not be confused with a theory: while a model seeks...

a model for a language moreover satisfies a particular sentence or theory (set of sentences), it is called a model of the sentence or theory. Model theory...

empirical results. The Bohr model is a relatively primitive model of the hydrogen atom, compared to the valence shell model. As a theory, it can be derived as...

Mathematics portal Glossary of set theory Class (set theory) List of set theory topics Relational model – borrows from set theory Venn diagram In his 1925 paper...

In model theory, a first-order theory is called model complete if every embedding of its models is an elementary embedding. Equivalently, every first-order...

cosmology, the steady-state model or steady state theory is an alternative to the Big Bang theory. In the steady-state model, the density of matter in the...

Atomic theory is the scientific theory that matter is composed of particles called atoms. The definition of the word "atom" has changed over the years...

In model theory and related areas of mathematics, a type is an object that describes how a (real or possible) element or finite collection of elements...

framework of pregeometries. In the branch of mathematical logic called model theory, infinite finitary matroids, there called "pregeometries" (and "geometries"...

In model theory, interpretation of a structure M in another structure N (typically of a different signature) is a technical notion that approximates the...

In set theory, inner model theory is the study of certain models of ZFC or some fragment or strengthening thereof. Ordinarily these models are transitive...

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

Grand Unified Theory (GUT) is any model in particle physics that merges the electromagnetic, weak, and strong forces (the three gauge interactions of...

In universal algebra and in model theory, a structure consists of a set along with a collection of finitary operations and relations that are defined on...

Standard Model (MSSM) and Next-to-Minimal Supersymmetric Standard Model (NMSSM), and entirely novel explanations, such as string theory, M-theory, and extra...

matrix, for example: Situational Leadership Theory, now named the Situational Leadership Model, is a model created by Dr. Paul Hersey and Dr. Ken Blanchard...

the growth model. The quantity theory of endogenous productivity growth was proposed by Russian economist Vladimir Pokrovskii.The theory explains growth...

Relational models theory (RMT) is a theory of interpersonal relationships, authored by anthropologist Alan Fiske and initially developed from his fieldwork...

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

The Thomas–Fermi (TF) model, named after Llewellyn Thomas and Enrico Fermi, is a quantum mechanical theory for the electronic structure of many-body systems...

from the theory. A satisfiable theory is a theory that has a model. This means there is a structure M that satisfies every sentence in the theory. Any satisfiable...

Institutional theory and Institutional logic. In mathematical logic, institutional model theory generalizes a large portion of first-order model theory to an...

atom was discussed, and by the end of the century the leading model: 175  was vortex theory of the atom, proposed by William Thomson (later Lord Kelvin)...

abstract model theory is a generalization of model theory that studies the general properties of extensions of first-order logic and their models. Abstract...

Consequently, proof theory is syntactic in nature, in contrast to model theory, which is semantic in nature. Some of the major areas of proof theory include structural...

to refer to the "mental model" theory of reasoning developed by Philip Johnson-Laird and Ruth M. J. Byrne. The term mental model is believed to have originated...

The unified theory of acceptance and use of technology (UTAUT) is a technology acceptance model formulated by Venkatesh and others in "User acceptance...