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|Table of Contents Math Background Matrices Orthogonality|
|See also: linear dependence, matrix multiplication|
Orthogonality corresponds to the (linear) independence of variables.
|Orthogonal||A matrix X is said to be orthogonal if the product XTX is a diagonal matrix.|
|Orthonormal||A matrix X is said to be orthonormal if the product XTX is the identity matrix I.|
Last Update: 2005-Jul-16