Dear All, Do injective objects exist in the category of the coalgebras of the functor Po(Ax-) where P is the power set functor and A a non empty set? If the answer is yes, can they be characterized? Best regards. Maurice =3D=3D=3D=3D=3D A bientot. Maurice <kianpi maurice><mkianpi@uycdc.uninet.cm> ___________________________________________________________ Do You Yahoo!? -- Une adresse @yahoo.fr gratuite et en fran=E7ais ! Yahoo! Mail : http://fr.mail.yahoo.com