Do all linear transformations are matrix transformation? In a book by David C Lay, he wrote on page 77 that not all linear tranformations are matrix transformations and on page 82 he wrote that very linear transformation from R(adsbygoogle = window.adsbygoogle || []).push({}); ^{n}to R^{m}is actually a matrix transformation. I know that every matrix transformation is linear but not sure about the reverse.

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# Linear transformation and matrix transformation

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