CANONICAL FORMULAS FOR wK4
CANONICAL FORMULAS FOR wK4
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wK4 的规范公式
DOI:
10.1017/s1755020312000251
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发表时间:
2012
期刊:
影响因子:
--
通讯作者:
BEZHANISHVILI G
中科院分区:
文献类型:
--
作者:
BEZHANISHVILI G
We generalize the theory of canonical formulas for K4, the logic of transitive frames, to wK4, the logic of weakly transitive frames. Our main result establishes that each logic over wK4 is axiomatizable by canonical formulas, thus generalizing Zakharyaschev’s theorem for logics over K4. The key new ingredients include the concepts of transitive and strongly cofinal subframes of weakly transitive spaces. This yields, along with the standard notions of subframe and cofinal subframe logics, the new notions of transitive subframe and strongly cofinal subframe logics over wK4. We obtain axiomatizations of all four kinds of subframe logics over wK4. We conclude by giving a number of examples of different kinds of subframe logics over wK4.
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DOI:
10.1002/malq.19930390136
发表时间:
1993
期刊:
Math. Log. Q.
影响因子:
--
作者:
M. Kracht
通讯作者:
M. Kracht
影响因子:
0.6
作者:
K. Fine
通讯作者:
K. Fine
影响因子:
0.6
作者:
M. Zakharyaschev
通讯作者:
M. Zakharyaschev
影响因子:
0.6
作者:
M. Zakharyaschev
通讯作者:
M. Zakharyaschev
影响因子:
0.6
作者:
W. Blok
通讯作者:
W. Blok