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  2. Inverse-chi-squared distribution - Wikipedia

    en.wikipedia.org/wiki/Inverse-chi-squared...

    In probability and statistics, the inverse-chi-squared distribution (or inverted-chi-square distribution[1]) is a continuous probability distribution of a positive-valued random variable. It is closely related to the chi-squared distribution. It arises in Bayesian inference, where it can be used as the prior and posterior distribution for an ...

  3. Character theory - Wikipedia

    en.wikipedia.org/wiki/Character_theory

    Character theory. In mathematics, more specifically in group theory, the character of a group representation is a function on the group that associates to each group element the trace of the corresponding matrix. The character carries the essential information about the representation in a more condensed form.

  4. Peano–Jordan measure - Wikipedia

    en.wikipedia.org/wiki/Peano–Jordan_measure

    Peano–Jordan measure. In mathematics, the Peano–Jordan measure (also known as the Jordan content) is an extension of the notion of size (length, area, volume) to shapes more complicated than, for example, a triangle, disk, or parallelepiped. It turns out that for a set to have Jordan measure it should be well-behaved in a certain ...

  5. Integration by parts - Wikipedia

    en.wikipedia.org/wiki/Integration_by_parts

    Calculus. In calculus, and more generally in mathematical analysis, integration by parts or partial integration is a process that finds the integral of a product of functions in terms of the integral of the product of their derivative and antiderivative.

  6. Euler characteristic - Wikipedia

    en.wikipedia.org/wiki/Euler_characteristic

    In mathematics, and more specifically in algebraic topology and polyhedral combinatorics, the Euler characteristic (or Euler number, or Euler–Poincaré characteristic) is a topological invariant, a number that describes a topological space 's shape or structure regardless of the way it is bent. It is commonly denoted by (Greek lower-case ...

  7. Cauchy–Schwarz inequality - Wikipedia

    en.wikipedia.org/wiki/Cauchy–Schwarz_inequality

    Cauchy–Schwarz inequality. The Cauchy–Schwarz inequality (also called Cauchy–Bunyakovsky–Schwarz inequality) [1][2][3][4] is an upper bound on the inner product between two vectors in an inner product space in terms of the product of the vector norms. It is considered one of the most important and widely used inequalities in mathematics.

  8. Manifold - Wikipedia

    en.wikipedia.org/wiki/Manifold

    In mathematics, a manifold is a topological space that locally resembles Euclidean space near each point. More precisely, an -dimensional manifold, or -manifold for short, is a topological space with the property that each point has a neighborhood that is homeomorphic to an open subset of -dimensional Euclidean space.

  9. Dirichlet L-function - Wikipedia

    en.wikipedia.org/wiki/Dirichlet_L-function

    In mathematics, a Dirichlet L-series is a function of the form. where is a Dirichlet character and s a complex variable with real part greater than 1. It is a special case of a Dirichlet series. By analytic continuation, it can be extended to a meromorphic function on the whole complex plane, and is then called a Dirichlet L-function and also ...