Dummett, M. A. E.; Lemmon, E. J. Modal logics between S4 and S5. (English) Zbl 0178.30801 Z. Math. Logik Grundlagen Math. 5, 250-264 (1959). Reviewer: A. N. Prior (M. R. 28 # 27) Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 ReviewCited in 51 Documents MSC: 03B45 Modal logic (including the logic of norms) Keywords:modal logic Citations:Zbl 0037.29409; Zbl 0080.00803; Zbl 0079.00606; Zbl 0023.09902 PDFBibTeX XMLCite \textit{M. A. E. Dummett} and \textit{E. J. Lemmon}, Z. Math. Logik Grundlagen Math. 5, 250--264 (1959; Zbl 0178.30801) Full Text: DOI