Mirror symmetry conjecture for Calabi–Yau fractional complete intersections

Let $X\to\mathbf{P}_{\Delta}$ and $X^{\vee}\to\mathbf{P}_{\nabla}$ be smooth MPCP desingularizations admitting the stated nef-partitions, and let $Y$ and $Y^{\vee}$ be the associated Calabi–Yau double covers constructed from those nef-partitions. Mirror symmetry conjecture. $Y$ and $Y^{\vee}$ are mirror. This conjecture proposes mirror symmetry for Calabi–Yau fractional complete intersections obtained as double covers from dual nef-partitions; the supplied text gives no resolution status.