Weak Hadamard Star Configurations and Apolarity

Abstract

In [7] the authors have introduced a new construction using the Hadamard product to present star configurations of codimension $ c $ of $\mathbb{P}^n$ and which they called Hadamard star configurations. In this paper, we introduce a more general type of Hadamard star configuration. Any star configuration constructed by our approach is called a weak Hadamard star configuration. We classify weak Hadamard star configurations, and in the case $ c=n $, we investigate the existence of a (weak) Hadamard star configuration apolar to the generic homogeneous polynomials of degree $ d$.