• ← SingularValueDecomposition

Tr

Matrix trace (WMA link)

Tr[m]

computes the trace of the matrix m.

• • Tr[{{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}]

Symbolic trace:

• • Tr[{{a, b, c}, {d, e, f}, {g, h, i}}]