When are the rings $I:I$ Gorenstein?

Naoki Endo, Shiro Goto, Shin-ichiro Iai +1

Let $I(\ne A)$ be an ideal of a $d$-dimensional Noetherian local ring $A$ with ${\mathrm{ht}}_{A}I\ge 2$, containing a non-zerodivisor. The problem of when the ring $I:I=\oper…