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Let Y be a Calabi-Yau complete intersection in a weighted projective space.We show that the space of quadratic invariants of the hypergeometric groupassociated with the twisted I-function is one-dimensional, and spanned by theGram matrix of a split-generator of the derived category of coherent sheaves onY with respect to the Euler form.

Invariants of hypergeometric groups for Calabi-Yau complete intersections in weighted projective spaces