%0 Journal Article %T An Immediate Derivation of Maximum Principle in Banach spaces, Assuming Reflexive Input and State Spaces %A Paolo d'Alessandro %J Cubo : A Mathematical Journal %D 2012 %I Universidad de La Frontera and Universidade Federal de Pernambuco %X Consideramos una formulaci¨®n estandar para el problema de norma optimal en espacios de Banach y mostramos que con un argumento simple que invoca algunos fuertes teoremas generales de la teor¨ªa de espacios de Banach elegidos apropiadamente se deriva directamente el Principio del Maximo. We consider a standard setting for the norm optimal problem in Banach spaces and show that with a simple argument which invokes some appropriately selected powerful general Theorems for Banach spaces a straightforward derivation of the Maximum Principle is obtained. %K Linear Control Systems in Banach Spaces %K Norm Optimal Control %K Support of Closed Convex Sets %U http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0719-06462012000200005