Lemma 8.2.4 and Corollary 9.1.2 tell us that the rules CrL and C1R and each application of C1L with principal formula other than x:□A can be eliminated in S(K4) and S(S4).
KeywordsDeduction System Propositional Variable Infinite Chain Proof Search Related Rule
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
Unable to display preview. Download preview PDF.
© Springer Science+Business Media Dordrecht 2000