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  2. Graph center - Wikipedia

    en.wikipedia.org/wiki/Graph_center

    The center can be found using the Floyd–Warshall algorithm. [4] [5] Another algorithm has been proposed based on matrix calculus. [6] The concept of the center of a graph is related to the closeness centrality measure in social network analysis, which is the reciprocal of the mean of the distances d(A,B). [1]

  3. Linkage disequilibrium - Wikipedia

    en.wikipedia.org/wiki/Linkage_disequilibrium

    If D between alleles at two loci at generation 0 is given the designation D 0, then in the following generation : D 1 = D 0 (1 - c) and in generation t : D t = D 0 (1 - c) t. Since c must be greater than zero, D t approaches zero as t becomes large. For the example given previously, no association is expected between hair colour and eye colour.

  4. Template:Div col - Wikipedia

    en.wikipedia.org/wiki/Template:Div_col

    Breaks a list into columns. It automatically breaks each column to an equal space, so you do not manually have to find the half way point on two columns. The list is provided by |content= or closed with {{div col end}}. Template parameters [Edit template data] Parameter Description Type Status Column width colwidth Specifies the width of columns, and determines dynamically the number of ...

  5. Division algebra - Wikipedia

    en.wikipedia.org/wiki/Division_algebra

    Wedderburn's little theorem states that if D is a finite division algebra, then D is a finite field. [1] Over an algebraically closed field K (for example the complex numbers C), there are no finite-dimensional associative division algebras, except K itself. [2] Associative division algebras have no nonzero zero divisors.

  6. Kullback–Leibler divergence - Wikipedia

    en.wikipedia.org/wiki/Kullback–Leibler_divergence

    The relative entropy was introduced by Solomon Kullback and Richard Leibler in Kullback & Leibler (1951) as "the mean information for discrimination between and per observation from ", [6] where one is comparing two probability measures ,, and , are the hypotheses that one is selecting from measure , (respectively).

  7. Relative interior - Wikipedia

    en.wikipedia.org/wiki/Relative_interior

    Formally, the relative interior of a set (denoted ⁡ ()) is defined as its interior within the affine hull of . [1] In other words, ⁡ ():= {: > ⁡ ()}, where ⁡ is the affine hull of , and () is a ball of radius centered on . Any metric can be used for the construction of the ball; all metrics define the same set as the relative interior.

  8. Template:Center - Wikipedia

    en.wikipedia.org/wiki/Template:Center

    A simple template to center-align content in tables and other places. Be aware that the center class is applied to this template, which means every element within the template has its left and right margins set to auto. This may harm some templates. Template parameters [Edit template data] Parameter Description Type Status Content 1 Content to be centered Content required Custom CSS style ...

  9. Triangle center - Wikipedia

    en.wikipedia.org/wiki/Triangle_center

    Not every subset D ⊆ T is a viable domain. In order to support the bisymmetry test D must be symmetric about the planes b = c, c = a, a = b. To support cyclicity it must also be invariant under 2π/3 rotations about the line a = b = c. The simplest domain of all is the line (t, t, t) which corresponds to the set of all equilateral triangles.