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Hi all, i've occasionly seen people multiply a matrix by its transpose, what is the use and intuition of the product? Any help appreciated.
In that case, its use is obvious, as M MT = I. Otherwise, it depends on the context.In one case yes,
Was in stats, with covarience matrices.In that case, its use is obvious, as M MT = I. Otherwise, it depends on the context.
These products show up when inner products are involved. For example, if you write elements of ##\mathbb R^n## as n×1 matrices, you can write ##x\cdot y=x^Ty##. From this you get results like ##(Mx)\cdot(My)=(Mx)^T(My)=x^TM^TMy##.Hi all, i've occasionly seen people multiply a matrix by its transpose, what is the use and intuition of the product? Any help appreciated.
What would that mean intuition wise?