%0 Journal Article %T The class of hypergroups in which the hearth is in the set of identities %A Violeta Leoreanu %J Le Matematiche %D 1999 %I University of Catania %X In this paper, the hypergroups, for which the heart is the set of identities, are studied. %U http://www.dmi.unict.it/ojs/index.php/lematematiche/article/view/312