%0 Journal Article %T La tensi¨®n entre dos concepciones de los sistemas jur¨ªdicos: Estudio en homenaje a Carlos Eduardo Alchourr¨®n %A Rodr¨ªguez %A Jorge L. %J An£¿£¿lisis filos£¿3fico %D 2006 %I Scientific Electronic Library Online %X carlos eduardo alchourr¨®n and eugenio bulygin have made contributions of fundamental importance for the development of the theory of legal systems. their ideas reflex an evolution from a static to a dynamic vision of such systems. the main purpose of the present paper is to show that, notwithstanding, there exists a certain tension in the thesis defended by alchourr¨®n and bulygin between two different conceptions of a legal system. on the one hand, a conception related to the reconstruction of the set of relevant norms to solve a certain case; on the other, a conception related to a satisfactory characterization of law as an institution. the different concerns of each of those reconstructions force to refine certain ideas associated with the dynamics of law to avoid derivations which appear incompatible with ordinary legal intuitions. %K legal systems %K conceptions of norms %K applicability %K legal dynamics. %U http://www.scielo.org.ar/scielo.php?script=sci_abstract&pid=S1851-96362006000200004&lng=en&nrm=iso&tlng=en