Two Temporal Logics of Contingency
This work concerns the use of operators for past and future con-tingency in Priorean temporal logic. We will develop a system namedCt, whose language includes a propositional constant and prove that(i) Ct is complete with respect to a certain class of general frames and(ii) the usual operators for past and future necessity are denable insuch system. Furthermore, we will introduce the extension Ctlin thatcan be interpreted on linear and transitive general frames. The theo-retical result of the current work is that contingency can be treatedas a primitive notion in reasoning about temporal modalities.
2002 ◽
Vol 12
(6)
◽
pp. 875-903
◽
Keyword(s):
2020 ◽
Vol 34
(06)
◽
pp. 10218-10225
◽
1989 ◽
Vol 4
(2)
◽
pp. 141-162
◽
Keyword(s):
1999 ◽
Vol 13
(2)
◽
pp. 65-65
Keyword(s):
2017 ◽
Vol 46
(1/2)
◽
Keyword(s):
1998 ◽
Vol 8
(3)
◽
pp. 277-320
◽
Keyword(s):