sign function
101Decimal — For other uses, see Decimal (disambiguation). This article aims to be an accessible introduction. For the mathematical definition, see Decimal representation. Numeral systems by culture Hindu Arabic numerals Western Arabic (Hindu numerals)… …
102Givens rotation — In numerical linear algebra, a Givens rotation is a rotation in the plane spanned by two coordinates axes. Givens rotations are named after Wallace Givens who introduced them to numerical analysts in the 1950s while he was working at Argonne… …
103Concordant pair — In statistics, a concordant pair is a pair of a two variable (bivariate) observation data set {X1,Y1} and {X2,Y2}, where: Correspondingly, a discordant pair is a pair, as defined above, where and the sign function, often represented as sgn, is… …
104Pythagorean theorem — See also: Pythagorean trigonometric identity The Pythagorean theorem: The sum of the areas of the two squares on the legs (a and b) equals the area of the square on the hypotenuse (c) …
105Square wave — A square wave is a kind of non sinusoidal waveform, most typically encountered in electronics and signal processing. An ideal square wave alternates regularly and instantaneously between two levels. Origins and uses Square waves are universally… …
106Leibniz formula for determinants — In algebra, the Leibniz formula expresses the determinant of a square matrix A = (a {ij}) {i,j = 1, dots, n} in terms of permutations of the matrix elements. Named in honor of Gottfried Leibniz, the formula is:det(A) = sum {sigma in S n}… …
107Box–Cox distribution — The Box–Cox distribution (also known as the power normal distribution) is the distribution of a random variable X for which the Box–Cox transformation on X follows a truncated normal distribution. It is a continuous probability distribution… …
108Equicontinuity — In mathematical analysis, a family of functions is equicontinuous if all the functions are continuous and they have equal variation over a given neighbourhood (a precise definition appears below). More generally, equicontinuous applies to any… …
109Irwin-Hall distribution — In probability theory and statistics, the Irwin Hall distribution is a continuous probability distribution of the sum of n i.i.d. U (0,1) random variables::X = sum {k=1}^n U k.For this reason it is also known as the uniform sum distribution. The… …
110Permanent — In linear algebra, the permanent of a matrix is a function of a matrix related to the determinant. The permanent as well as the determinant are polynomials of the entries of the matrix. Definition The permanent of an n by n matrix A = ( a i,j )… …
