Negative theology — also known as the Via Negativa (Latin for Negative Way ) and Apophatic theology is a theology that attempts to describe God by negation, to speak of God only in terms of what may not be said about God. In brief, the attempt is to gain and express … Wikipedia
Perron–Frobenius theorem — In linear algebra, the Perron–Frobenius theorem, proved by Oskar Perron (1907) and Georg Frobenius (1912), asserts that a real square matrix with positive entries has a unique largest real eigenvalue and that the corresponding… … Wikipedia
Reliability of Wikipedia — Vandalism of a Wikipedia article. The section on the left is the normal, undamaged version; and on the right is the edited, damaged version. The reliabili … Wikipedia
Semiring — In abstract algebra, a semiring is an algebraic structure similar to a ring, but without the requirement that each element must have an additive inverse. The term rig is also used occasionally this originated as a joke, suggesting that rigs are… … Wikipedia
Computing the permanent — In mathematics, the computation of the permanent of a matrix is a problem that is believed to be more complex than the computation of the determinant of a matrix despite the apparent similarity of the definitions. The permanent is defined… … Wikipedia
Regular Hadamard matrix — In mathematics a regular Hadamard matrix is a Hadamard matrix whose row and column sums are all equal. While the order of a Hadamard matrix must be 1, 2, or a multiple of 4, regular Hadamard matrices carry the further restriction that the order… … Wikipedia
Simplex — For other uses, see Simplex (disambiguation). A regular 3 simplex or tetrahedron In geometry, a simplex (plural simplexes or simplices) is a generalization of the notion of a triangle or tetrahedron to arbitrary dimension. Specifically, an n… … Wikipedia
Probability vector — In mathematics and statistics, a probability vector or stochastic vector is a vector with non negative entries that add up to one.The positions (indices) of a probability vector represent the possible outcomes of a discrete random variable, and… … Wikipedia
Vector — may refer to: In mathematics * Euclidean vector, a geometric entity endowed with both length and direction, an element of a Euclidean vector space * Coordinate vector, in linear algebra, an explicit representation of an element of any abstract… … Wikipedia
Lehmer matrix — In mathematics, particularly matrix theory, the n×n Lehmer matrix is the constant symmetric matrix defined by:A {ij} =egin{cases}i/j, jge i j/i, j n . The values of elements diminish toward zero away from the diagonal, where all elements have… … Wikipedia
Matching (graph theory) — In the mathematical discipline of graph theory, a matching or independent edge set in a graph is a set of edges without common vertices. It may also be an entire graph consisting of edges without common vertices. Covering packing dualities… … Wikipedia