A Negative Solution to Ono’s Problem P52: Existence and Disjunction Properties in Intermediate Predicate Logics
A Negative Solution to Ono’s Problem P52: Existence and Disjunction Properties in Intermediate Predicate Logics
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小野问题 P52 的负解:中间谓词逻辑中的存在性和析取性质
DOI:
10.1007/978-3-030-76920-8_9
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Suzuki Nobu-Yuki
中科院分区:
文献类型:
--
作者:
Smith L. Vanessa;Tarui Nori;Yamagata Takashi;Mayama Akira;Suzuki Nobu-Yuki
A predicate logicis said to have theexistence property(EP), if for every,implies that there exists an individual variablevsuch that. A logicis said to have thedisjunction property(DP), if for everyAand everyB,implies eitheror. Sinceis regarded as the generalized, a natural question arises:Does EP imply DP?In 1987, Ono posed this as a problem in the context of intermediate predicate logics. This problem, known as Ono’s problemP52, has remained open for 25 years. In the present paper, we provide a negative solution to this problem by constructing counterexamples. For this purpose, we use thequantifier-annihilation axiomZ:. AlthoughZis an “abnormal” axiom, it plays an important role in our construction. We also introduce a condition (Z-normality) that excludes this “abnormal”Zand is a natural condition for reasonable logics. We show that EP implies DP forZ-normal logics. This result suggests a reason why Ono’s problemP52has remained open.
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DOI:
10.2307/2270260
发表时间:
1971
期刊:
J. Symb. Log.
影响因子:
--
作者:
Sabine Gornemann
通讯作者:
Sabine Gornemann
DOI:
10.1007/978-1-4613-0609-2_9
发表时间:
1990
期刊:
Notre Dame J. Formal Log.
影响因子:
--
作者:
V. Shehtman;D. Skvortsov
通讯作者:
D. Skvortsov
影响因子:
0.6
作者:
D. Gabbay;D. D. Jongh
通讯作者:
D. D. Jongh
DOI:
10.2977/prims/1195192964
发表时间:
1972
影响因子:
1.2
作者:
H. Ono
通讯作者:
H. Ono
影响因子:
0.7
作者:
T. Umezawa
通讯作者:
T. Umezawa