Birkhoff's Theorem for Panstochastic Matrices

The panstochastic analogue of Birkhoff's Theorem on doubly-stochastic matrices is proved in the case $n=5$. It is shown that this analogue fails when $n>1$, $n \ne 5$.Comment: 13 pages, no figures, AMSTeX, uses amsppt.sty. Version 4 has a few minor rewording