Apolarity and direct sum decomposability of polynomials Jan 12, 2025 Weronika Buczyńska, Jarosław Buczyński, Johannes Kleppe, and Zach Teitler. Apolarity and direct sum decomposability of polynomials. Michigan Math. J. 64 (2015), no. 4, 675-719 arXiv: https://arxiv.org/abs/1307.3314 doi: 10.1307/mmj/1447878029