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  2. Mathematical model - Wikipedia

    en.wikipedia.org/wiki/Mathematical_model

    A mathematical model is an abstract description of a concrete system using mathematical concepts and language. The process of developing a mathematical model is termed mathematical modeling. Mathematical models are used in applied mathematics and in the natural sciences (such as physics, biology, earth science, chemistry) and engineering ...

  3. Statistical model - Wikipedia

    en.wikipedia.org/wiki/Statistical_model

    Formal definition. In mathematical terms, a statistical model is a pair ( ), where is the set of possible observations, i.e. the sample space, and is a set of probability distributions on . [ 3] The set represents all of the models that are considered possible. This set is typically parameterized: .

  4. Real number - Wikipedia

    en.wikipedia.org/wiki/Real_number

    Real number. In mathematics, a real number is a number that can be used to measure a continuous one- dimensional quantity such as a distance, duration or temperature. Here, continuous means that pairs of values can have arbitrarily small differences.

  5. Model theory - Wikipedia

    en.wikipedia.org/wiki/Model_theory

    Model theory. In mathematical logic, model theory is the study of the relationship between formal theories (a collection of sentences in a formal language expressing statements about a mathematical structure ), and their models (those structures in which the statements of the theory hold). [1] The aspects investigated include the number and ...

  6. Set (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Set_(mathematics)

    Set (mathematics) A set of polygons in an Euler diagram. This set equals the one depicted above since both have the very same elements. In mathematics, a set is a collection of different [ 1] things; [ 2][ 3][ 4] these things are called elements or members of the set and are typically mathematical objects of any kind: numbers, symbols, points ...

  7. Parametric model - Wikipedia

    en.wikipedia.org/wiki/Parametric_model

    Definition. A statistical model is a collection of probability distributions on some sample space. We assume that the collection, 𝒫, is indexed by some set Θ. The set Θ is called the parameter set or, more commonly, the parameter space. For each θ ∈ Θ, let Fθ denote the corresponding member of the collection; so Fθ is a cumulative ...

  8. Mathematical formulation of the Standard Model - Wikipedia

    en.wikipedia.org/wiki/Mathematical_formulation...

    The standard model is a quantum field theory, meaning its fundamental objects are quantum fields, which are defined at all points in spacetime. QFT treats particles as excited states (also called quanta) of their underlying quantum fields, which are more fundamental than the particles. These fields are.

  9. Mathematics - Wikipedia

    en.wikipedia.org/wiki/Mathematics

    Mathematics is a field of study that discovers and organizes abstract objects, methods, theories and theorems that are developed and proved for the needs of empirical sciences and mathematics itself. There are many areas of mathematics, which include number theory (the study of numbers), algebra (the study of formulas and related structures ...