[1] BIRKHOFF G.:
An extended arithmetics. Duke Math. J. 3, 1937, 311-316.
MR 1545989
[2] BIRKHOFF G.:
Generalized arithmetics. Duke Math. J. 9, 1942, 283-302.
MR 0007031
[3] DAY M. M.:
Arithmetics of ordered systems. Trans. Amer. Math. Soc. 58, 1945, 1-43.
MR 0012262
[4] HERRLICH H.:
Cartesian closed topological categories. Math. Coll. Univ. Cape Town 9, 1974, 1 - 16.
MR 0460414 |
Zbl 0318.18011
[6] ŠLAPAL J.: Cardinal arithmetics of relational systems. To appear.