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  2. Integrable system - Wikipedia

    en.wikipedia.org/wiki/Integrable_system

    In mathematics, integrability is a property of certain dynamical systems.While there are several distinct formal definitions, informally speaking, an integrable system is a dynamical system with sufficiently many conserved quantities, or first integrals, that its motion is confined to a submanifold of much smaller dimensionality than that of its phase space.

  3. Uniform integrability - Wikipedia

    en.wikipedia.org/wiki/Uniform_integrability

    Uniform integrability is an extension to the notion of a family of functions being dominated in which is central in dominated convergence. Several textbooks on real analysis and measure theory use the following definition: [1] [2] Definition A: Let (,,) be a positive measure space.

  4. Dominated convergence theorem - Wikipedia

    en.wikipedia.org/wiki/Dominated_convergence_theorem

    Convergence of random variables, Convergence in mean; Monotone convergence theorem (does not require domination by an integrable function but assumes monotonicity of the sequence instead) Scheffé's lemma; Uniform integrability; Vitali convergence theorem (a generalization of Lebesgue's dominated convergence theorem)

  5. Real analysis - Wikipedia

    en.wikipedia.org/wiki/Real_analysis

    In mathematics, the branch of real analysis studies the behavior of real numbers, sequences and series of real numbers, and real functions. [1] Some particular properties of real-valued sequences and functions that real analysis studies include convergence, limits, continuity, smoothness, differentiability and integrability.

  6. Dirichlet's test - Wikipedia

    en.wikipedia.org/wiki/Dirichlet's_test

    In mathematics, Dirichlet's test is a method of testing for the convergence of a series that is especially useful for proving conditional convergence. It is named after its author Peter Gustav Lejeune Dirichlet , and was published posthumously in the Journal de Mathématiques Pures et Appliquées in 1862.

  7. Locally integrable function - Wikipedia

    en.wikipedia.org/wiki/Locally_integrable_function

    Measure and integration (as the English translation of the title reads) is a definitive monograph on integration and measure theory: the treatment of the limiting behavior of the integral of various kind of sequences of measure-related structures (measurable functions, measurable sets, measures and their combinations) is somewhat conclusive.

  8. Operational continuity - Wikipedia

    en.wikipedia.org/wiki/Operational_continuity

    Operational continuity refers to the ability of a system to continue working despite damages, losses, or critical events. In the Human Resources and Organizational domain, including IT, it implies the need to determine the level of resilience of the system, its ability to recover after an event, and build a system that resists to external and internal events or is able to recover after an ...

  9. Absolute continuity - Wikipedia

    en.wikipedia.org/wiki/Absolute_continuity

    Absolute continuity of measures is reflexive and transitive, but is not antisymmetric, so it is a preorder rather than a partial order. Instead, if μ ≪ ν {\displaystyle \mu \ll \nu } and ν ≪ μ , {\displaystyle \nu \ll \mu ,} the measures μ {\displaystyle \mu } and ν {\displaystyle \nu } are said to be equivalent .