An Ulm-type method with RR-order of convergence three

A new iterative method of third-order of convergence is constructed with the interesting feature that the calculation of inverse operators is not needed if the inverse of an operator is approximated. The semilocal convergence of the method is studied under classical Kantorovich-type conditions for iterative methods of second-order. Some applications are given, where the most important features of the method are shown.