The Cauchy condition, or Cauchy criterion as it is sometimes called, describes the necessary and sufficient condition that needs to exist for a sequence to converge. It was developed by Augustin Louis Cauchy, a French mathematician, in the early part...

In mathematics, a Cauchy (pronounced "coe-she") boundary condition imposed on an ordinary differential equation or a partial differential equation specifies both the values a solution of a differential equation is to take on the boundary of the domain...