dot product of two "orthogonal" matrices is of course zero, according to
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送交者: Caricaturist 于 2009-06-09, 16:03:16:
回答: dot product of two orthogonal matrices are an unit matrax or called basis sets 由 blobfish 于 2009-06-09, 10:51:45:
the definition of orthogonality!
but "orthogonal matrices" are not "orthogonal" to each other.
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