Deduction Theorems within RM and Its Extensions
Czelakowski, J. ; Dziobiak, W.
J. Symbolic Logic, Tome 64 (1999) no. 1, p. 279-290 / Harvested from Project Euclid
In [13], M. Tokarz specified some infinite family of consequence operations among all ones associated with the relevant logic RM or with the extensions of RM and proved that each of them admits a deduction theorem scheme. In this paper, we show that the family is complete in a sense that if C is a consequence operation with $C_{RM} \leq C$ and C admits a deduction theorem scheme, then C is equal to a consequence operation specified in [13]. In algebraic terms, this means that the only quasivarieties of Sugihara algebras with the relative congruence extension property are the quasivarieties corresponding, via the algebraization process, to the consequence operations specified in [13].
Publié le : 1999-03-14
Classification: 
@article{1183745705,
     author = {Czelakowski, J. and Dziobiak, W.},
     title = {Deduction Theorems within RM and Its Extensions},
     journal = {J. Symbolic Logic},
     volume = {64},
     number = {1},
     year = {1999},
     pages = { 279-290},
     language = {en},
     url = {http://dml.mathdoc.fr/item/1183745705}
}
Czelakowski, J.; Dziobiak, W. Deduction Theorems within RM and Its Extensions. J. Symbolic Logic, Tome 64 (1999) no. 1, pp.  279-290. http://gdmltest.u-ga.fr/item/1183745705/