Power sum decompositions of defining equations of reflection arrangements Jul 28, 2025 Zach Teitler and Alexander Woo. Power sum decompositions of defining equations of reflection arrangements. J. Alg. Comb. 41 (2015), no. 2, 365-383 arXiv: https://arxiv.org/abs/1304.7202 doi: 10.1007/s10801-014-0539-0