%0 Journal Article %T Equilibrios competitivos y de Bertrand, con y sin Diferenciaci¨®n de Productos %A Coloma %A German %J Revista de an¨˘lisis econ¨®mico %D 2009 %I Scientific Electronic Library Online %R 10.4067/S0718-88702009000100003 %X in this paper we show that a homogeneous-product market with multiple bertrand equilibria becomes a market with a single bertrand equilibrium when we introduce a small degree of product differentiation. when differentiation tends to zero, that bertrand equilibrium converges to the unique competitive equilibrium of the homogeneous-product market, which is in turn one of the multiple bertrand equilibria for that market. %K bertrand equilibrium %K competitive equilibrium %K product differentiation. %U http://www.scielo.cl/scielo.php?script=sci_abstract&pid=S0718-88702009000100003&lng=en&nrm=iso&tlng=en