A Combinatorial Problem in Matching
J. G. Kalbfleisch, Ralph G. Stanton · Journal of the London Mathematical Society · 1969
The following problems were suggested by Taussky and Todd [6]. Let X =(*! , x2,..., xn) and Y =(yl,y2, ••-,)>„) be two vectors. We say that X and Y match in r components if xt = yt for r values of /. We say that X covers Y if r ^ n — 1. Let G denote the set of /? " vectors (yi,y2, •••J ̂ n) » where yt = \\,2,..., or p