  All $\textrm{SL}(n)$ contravariant matrix-valued valuations on polytopes in
$\mathbb{R}^n$ are completely classified without any continuity assumptions.
Moreover, the symmetry assumption of matrices is removed. The general
Lutwak-Yang-Zhang matrix turns out to be the only such valuation if $n\geq 4$,
while a new function shows up in dimension three. In dimension two, the
classification corresponds to the known case of $\textrm{SL}(2)$ equivariant
matrix-valued valuations.
