| (mathematics) | von Neumann integer - A finite von Neumann ordinal. The von Neumann integer N is a finite set with N elements which are the von Neumann integers 0 to N-1. Thus 0 = = 1 = 0 = {} 2 = 0, 1 = {, {}} 3 = 0, 1, 2 = {, {}, {, {}}} ... The set of von Neumann integers is infinite, even though each of its elements is finite. |