Abstract
We prove the canonical models introduced in [D] do not exist for some graded normal logics with symmetric models, namelyKB°, KBD°, KBT°, so that we define a new kind of canonical models, the general ones, and show they exist and work well in every case.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
C. Bernardini,Degree thesis, Roma, 1986.
B. F. Chellas,Modal Logic; an Introduction, Cambridge Univ. Press, 1980.
F. De Caro,Graded modalities, II,Studia Logica 47 (1988), pp. 1–10.
M. Fattorosi-Barnaba andC. Cerrato,Graded modalities, III,Studia Logica 47 (1988), pp. 99–110.
M. Fattorosi-Barnaba andF. De Caro,Graded modalities, I,Studia Logica 44 (1985), pp. 197–221.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Cerrato, C. General canonical models for graded normal logics (graded modalities IV). Stud Logica 49, 241–252 (1990). https://doi.org/10.1007/BF00935601
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00935601