Symmetrize¶ Symmetrize a matrix. $ wo 'Symmetrize[{{1, 2}, {2, 3}}]' SymmetrizedArray[StructuredArray`StructuredData[{2, 2}, {{{1, 1} -> 1, {1, 2} -> 2, {2, 2} -> 3}, Symmetric[{1, 2}]}]]