%0 Journal Article %T Decomposizione ed s-m rappresentazione di gruppi finiti %A Franco Migliorini %A Jen£¿ Sz¨¦p %J Le Matematiche %D 1996 %I University of Catania %X This paper is a survey of a few previous works of the authors with other new results. We introduce a special decomposition of a finite group [semigroup] and determine its main properties. From such a decomposition one can construct, for a special class of finite groups, a set-matrix representation. The group D_4 has such a representation. Several theorems were already obtained on groups with s-m representation. %U http://www.dmi.unict.it/ojs/index.php/lematematiche/article/view/466