Hadamard Products
摘要
In this chapter, we start our journey to discover the Hadamard product of projective varieties. We first introduce two different definitions of Hadamard products, and then we describe the main tools, such as Hadamard transformations, and some basic results, such as Hadamard–Terracini Lemma, that we will use in the whole book. In this chapter, we also consider the Hadamard product of ideals proving some relevant results related to Gröbner bases.