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# principal-axis transformation

English-Chinese computer dictionary (英汉计算机词汇大词典). 2013.

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• Principal axis theorem — In the mathematical fields of geometry and linear algebra, a principal axis is a certain line in a Euclidean space associated to an ellipsoid or hyperboloid, generalizing the major and minor axes of an ellipse. The principal axis theorem states… …   Wikipedia

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• Norman Arthur Wiegmann — (13 April 1920–14 November 2001) was a mathematician specializing in modern algebra, in particular linear algebra and matrix theory, who spent a major part of his career teaching at the George Washington University and other universities. He… …   Wikipedia

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• Crystal structure — In mineralogy and crystallography, crystal structure is a unique arrangement of atoms or molecules in a crystalline liquid or solid. A crystal structure is composed of a pattern, a set of atoms arranged in a particular way, and a lattice… …   Wikipedia