Huneke-Wiegand conjecture and change of rings

Shiro Goto, Ryo Takahashi, Naoki Taniguchi +1

Let $R$ be a Cohen-Macaulay local ring of dimension one with a canonical module ${\mathrm{K}}_{\mathrm{R}}$. Let $I$ be a faithful ideal of $R$. We explore the problem of when $I{\otimes }_R{I}^{\vee }$…