In this paper we propose a modification to the invariant polytope algorithm (ipa) using ideas of the finite expressible tree algorithm (feta) by M\"oller and Reif. We show that our new feta-flavoured-ipa applies to a wider range of matrix families.

翻译：本文提出了一种改进的不变多面体算法（ipa），该算法借鉴了Möller和Reif提出的有限可表达树算法（feta）的思想。我们证明了这种融合feta思想的新型ipa算法适用于更广泛的矩阵族。