The conjugate of a product of matrices is the product of the conjugates.

Created almost 9 years ago, updated about 8 hours ago

For compatible complex matrices, $\overline{AB}=\overline A\,\overline B$. Indeed, conjugating $\sum_k a_{ik}b_{kj}$ conjugates each factor and preserves the sum. Factor order stays the same; for an adjoint, order reverses.

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