Helium at Zero Temperature With Hard-Sphere and Other Forces

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. The first part of this paper is devoted to the solution of the quantum hard-sphere problem (sections 2 through 5) This solution based on a method devised by one of uss is numerical but essentially exact.