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Transpose
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<p>In <a href="/facts/Linear_algebra/8VaB4VWk">linear algebra</a>, the transpose of a <a href="/facts/Matrix_(mathematics)/qa8FI4ko">matrix</a> is an operator which flips a matrix over its diagonal; that is, it switches the row and column indices of the matrix A by producing another matrix, often denoted by AT (among other notations). </p><p>The transpose of a matrix was introduced in 1858 by the British mathematician <a href="/facts/Arthur_Cayley/NBd7QkeE">Arthur Cayley</a>. </p>