When are the Rees algebras of parameter ideals almost Gorenstein graded rings?

Shiro Goto, Rahimi Mehran, Naoki Taniguchi +1

Let $A$ be a Cohen-Macaulay local ring with $\dim A=d\ge 3$, possessing the canonical module ${\mathrm{K}}_A$. Let $a_1,a_2,\dots ,a_r$ $(3\le r\le d)$ be a sub…