Tannakian duality and Gauss-Manin connections for a family of curves

Phùng Hô Hai, Võ Quôc Bao, Trân Phan Quôc Bao

Let $X/S$ be a smooth family of smooth projective varieties, where $S$ is a smooth affine curve over a field $k$ of characteristic $0.$ We relate the differential fundamental group…