cross product

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cross product

[′krȯs ‚prä·dəkt]
(mathematics)
An anticommutative multiplication on the vectors of euclidean three-dimensional space. Also known as vector product.
The product of the two mean terms of a proportion, or the product of the two extreme terms; in the proportion a/b = c/d, it is ad or bc.
References in periodicals archive ?
Only one second-order crossproduct term in one population differed significantly from zero in the analysis of stabilizing/disruptive selection.
The total number of independent epistasis tests then was estimated to be the sum of the crossproducts of the effective number of markers for all 465 pairs of linkage groups.
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and crossproducts between allele frequencies and D such that the mean at linkage disequilibrium is:
Bilinear models are a natural extension of ARMA models in that they add the crossproducts of [y.sub.t-i] and [[epsilon].sub.t-j] to account for nonlinearity.
Sums of squares and crossproducts were generated using JMP (SAS Institute 1989), and the group-level additive genetic variances and additive genetic covariances were calculated to produce an estimate of the population genotypic ([G.sub.g]) and population environmental ([E.sub.g]) covariance matrices, where the subscript g distinguishes group-level measures from their corresponding individual-level measures (see Goodnight 1989).