nonnegative
71Trinomial expansion — In mathematics, a trinomial expansion is the expansion of a power of a sum of three terms into monomials. The expansion is given by :(a+b+c)^n = sum {i,j,k} {n choose i,j,k}, a^i , b^j , c^k where n is a nonnegative integer and the sum is taken… …
72Mixture density — In statistics, a mixture density is a probability density function which is a convex combination of other probability density functions.Consider a probability density function p ( x , a ) for a variable x , parameterized by a . That is, for each… …
73Hurwitz quaternion — In mathematics, a Hurwitz quaternion (or Hurwitz integer) is a quaternion whose components are either all integers or all half integers (a mixture of integers and half integers is not allowed). The set of all Hurwitz quaternions is:H =… …
74Modulo operation — Quotient (red) and remainder (green) functions using different algorithms. In computing, the modulo operation finds the remainder of division of one number by another. Given two positive numbers, a (the dividend) and n (the divisor), a modulo n… …
75Quartic interaction — In quantum field theory, a quartic interaction is a theory about a scalar field phi; which contains an interaction term phi^4, and is considered by many teachers and students to be the simplest example of interacting fields. This theory consists… …
76Symmetric polynomial — This article is about individual symmetric polynomials. For the ring of symmetric polynomials, see ring of symmetric functions. In mathematics, a symmetric polynomial is a polynomial P(X1, X2, …, Xn) in n variables, such that if any of the… …
77Superadditive — A sequence { an }, n ge; 1, is called superadditive if it satisfies the inequality::(1) qquad a {n+m} geq a n+a mfor all m and n . The major reason for the use of superadditive sequences is the following lemma due to Fekete.:Lemma: For every… …
78Graph property — In graph theory a graph property is any inherently graph theoretical property of graphs (formal definitions follow), distinguished from properties of graphs described in terms of various graph representations: graph drawings, data structures for… …
79Variogram — In spatial statistics the theoretical variogram 2γ(x,y) is a function describing the degree of spatial dependence of a spatial random field or stochastic process Z(x). It is defined as the variance of the difference between field values at two… …
80List of mathematics articles (N) — NOTOC N N body problem N category N category number N connected space N dimensional sequential move puzzles N dimensional space N huge cardinal N jet N Mahlo cardinal N monoid N player game N set N skeleton N sphere N! conjecture Nabla symbol… …
