Sobre ciertas expresiones de la función rango, independientes de la teoría de ordinales

Abstract

In the present work we obtain several representations of the rank func- tion associated to a well founded relation in terms of transitive and supertransitive closures, by means of transfinite recursion theorems con- cerning these relations and with no use of ordinals theory • Moreover, specificai representations are obtained for the ordinary rank function in certain transitive classes