Geodesic
Rings in Post algebras
Acta mathematica Universitatis Comenianae, Tome 76 (2007) no. 2 
S. Rudeanu. Rings in Post algebras. Acta mathematica Universitatis Comenianae, Tome 76 (2007) no. 2. http://geodesic.mathdoc.fr/item/AMUC_2007_76_2_a15/
@article{AMUC_2007_76_2_a15,
     author = {S. Rudeanu},
     title = {Rings in {Post} algebras},
     journal = {Acta mathematica Universitatis Comenianae},
     year = {2007},
     volume = {76},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/AMUC_2007_76_2_a15/}
}
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Voir la notice de l'article provenant de la source Comenius University

Serfati [7]] defined a ring structure on every Post algebra. In this paper we determine all the rings that are defined over a Post algebra and share the properties of the Serfati ring. In the case r = 3 one of them is equivalent to the Post algebra. This is a term equivalence and it extends the equivalence between a Boolean algebra and the Boolean ring associated with it.