negative Gauss curvature into the three-dimensional Euclidean space is studied in this
paper. The global weak solutions to the Gauss-Codazzi equations with large data in L^ ∞
L∞ are obtained through the vanishing viscosity method and the compensated
compactness framework. The L^ ∞ L∞ uniform estimate and H− 1 compactness are
established through a transformation of state variables and construction of proper invariant …