WRONSKI ALGEBRA SYSTEMS ON FAMILIES OF SINGULAR CURVES

We replace the sheaves of principal parts on a family of reduced, loca l complete intersection curves by natural sheaves of algebras that are locally free. Our motivation is to be able to associate to any linear system on the family a Wronski system, as defined by Laksov and Thoru p. By applying their general theory of Wronski systems, we obtain in p articular a Weierstrass divisor on the family, in case there are no de generate components on a general fibre.