The Number of Classes of Invertible Boolean Functions
Michael A. Harrison · Journal of the ACM · 1963
Abslract.In a recent paper, C. S. Lorens [4] has focused attention on invertible Boolean fu~etions.Lorens has counted the number of classes of such functions by considering the same group acting o~ both the domain ~md range of such functions.In this work, a simplified algorithm for obtaining Lorens' results is given which extends his work by Mlowing differenb groups or~ the domain and range.