“…The definitions and results on commutative monoids are mainly due-sometimes in the framework of semiring theory-to Eilenberg [17], Goldstern [28], Karner [33], Krob [34], Kuich [35,36], Kuich, Salomaa [45], Manes, Arbib [47], Sakarovitch [53]. Our notion of continuous monoid is a specialization of the continuous algebras as defined, e. g., in Guessarian [31], Goguen, Thatcher, Wagner, Wright [27], Adamek, Nelson, Reiterman [2].…”