Abstract
In [HLY1], Hosono, Lian, and Yau posed a conjecture characterizing the set of
solutions to certain Gelfand-Kapranov-Zelevinsky hypergeometric equations which
are realized as periods of Calabi-Yau hypersurfaces in a Gorenstein Fano toric
variety $X$. We prove this conjecture in the case where $X$ is a complex
projective space.