TITLE: Does swapping columns of a matrix cause the rows of the inverse matrix to be swapped?
AUTHOR: @luismbat
#QUARKpic.twitter.com/nxcVwcRMGZ
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2) Now: (MP)⁻¹= P⁻¹M⁻¹. If we apply the same permutation P twice we get the original matrix and so P is its own inverse (P⁻¹=P) and left-multiplying by P swaps the rows of M⁻¹ that are swapped in P.
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