Picard–Vessiot groups of Lauricella's hypergeometric systems EC and Calabi–Yau varieties arising integral representations

Abstract

We study the Zariski closure of the monodromy group Mon of Lauricella's hypergeometric function F C . If the identity component Mon 0 acts irreducibly, then Mon ¯ ∩ SL 2 n ( C ) must be one of classical groups SL 2 n ( C ) , SO 2 n ( C ) and Sp 2 n ( C ) . We also study Calabi–Yau varieties arising from integral representations of F C .