ByAccording to enter link description herethis reference an elliptic curve is $F$-pure if and only if the $F$-pure threshold of its defining ideal is $1$. WhetherDoes there existsexist an $F$-pure local ring $R=A/\mathfrak{a}$ such that $\text{fpt}(\mathfrak{a})\neq 1$?
C.F.G
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