Numerical solutions and their superconvergence for weakly singular integral equations with discontinuous coefficients

摘要

The piecewise polynomial collocation method is discussed to solve second kind Fredholm integral equations with weakly singular kernelsK(t, s) which may be discontinuous ats = d, d= const. The main result is given in Theorem 4.1. Using special collocation points, error estimates at the collocation points are derived showing a more rapid convergence than the global uniform convergence in the interval of integration available by piecewise polynomials.