In this paper we present a very general deduction theorem which -based upon a uniform notion of proof from hypotheses- holds for a very large class of logical systems. Most of the known results for classical and modal logics, as well as new results, are immediate corollaries of this theorem.
@article{urn:eudml:doc:38971, title = {A general deduction theorem.}, journal = {Stochastica}, volume = {4}, year = {1980}, pages = {189-199}, zbl = {0462.03006}, mrnumber = {MR0611503}, language = {en}, url = {http://dml.mathdoc.fr/item/urn:eudml:doc:38971} }
Guccione, Salvatore; Tortora, Roberto. A general deduction theorem.. Stochastica, Tome 4 (1980) pp. 189-199. http://gdmltest.u-ga.fr/item/urn:eudml:doc:38971/