哥西型积分在结点处的极限值

LIMIT VALUES OF CAUCHY TYPE INTEGRAL AT KNOT POINTS

讨论了闭逐段光滑曲线上哥西型积分在结点处的极限值，并指出通常在闭逐段光滑周线上含有角点或尖点的Ｃｏｘｏ－Ｐｌｅｍｄｊ公式对结点未必成立。

Let D be a bounded domain in the complex plane with orientable piecewise smooth boundary D= L of class C', the author discusses boundary behaviour of integrals of cauchy type at knot points, and points out that the usual Coxo-Plemelj formula is not valid at knot points.