  For a polynomial $f = x_1^n + \dots + x_N^n$ let $G_f$ be the non--abelian
maximal group of symmetries of $f$. This is a group generated by all $g \in
\mathrm{GL}(N,\mathbb{C})$, rescaling and permuting the variables, so that
$f(\mathbf{x}) = f(g \cdot \mathbf{x})$. For any $G \subseteq G_f$ we compute
explicitly Hochschild cohomology of the category of $G$--equivarint matrix
factorizations of $f$. We introduce the pairing on it showing that it is a
Frobenius algebra.
