On the relations between heterogeneous uniform 2-algebraic closure operators and heterogeneous algebras
Joan B. Climent, Luis Fernandino Larrinaga · RACO (Revistes Catalanes amb Accés Obert) (Consorci de Serveis Universitaris de Catalunya) · 1989
In this paper it is shown that the heterogeneous translation of a theorem due to Birkhoff and Frink, proved not to be true by Mathiessen, is valid for a restricted class of heterogeneous algebraic closure operators. ewline 1980 Mathematics Subject Classification: Primari 08A30; Secondary 06A15