| 特称否定命题不能换位的辩护 |
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| 引用本文： | 向钘.特称否定命题不能换位的辩护[J].毕节学院学报,2012,30(1):51-54. |
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| 作者姓名： | 向钘 |
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| 作者单位： | 毕节学院政治与法学学院、毕节学院逻辑与文化研究中心,贵州毕节,551700 |
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| 摘 要： | 近年来,有逻辑学工作者对传统逻辑中的特称否定命题不能换位提出质疑。有的认为在赋予若干条件后SOP能换位为POS;有的认为通过欧拉图可以证明O命题是能够进行同质等值换位的;有的认为以全称命题为前提的换质位法推理中O命题是能够进行换位的。通过对他们的文章进行仔细的分析,发现他们的看法偏离了传统逻辑的研究对象、有悖于演绎推理的逻辑特性,存在误解特称量词"有"、"有的"的逻辑含义等问题。特称否定命题是不能换位的。
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| 关 键 词： | 特称否定命题 换位 辩护 |
A Justification for Denying the Conversion in Case of Particular Negative Propositions |
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| XIANG Xing.A Justification for Denying the Conversion in Case of Particular Negative Propositions[J].Journal of Bijie University,2012,30(1):51-54. |
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| Authors: | XIANG Xing |
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| Institution: | XIANG Xing(Politics and Law Department of Bijie University;Center for Logic and Culture,Bijie University,Guizhou551700,China) |
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| Abstract: | Among recent considerations about classical logic,some logic researchers are doubt about the claim that conversion can’t be performed in case of particular negative propositions.Some thinks that SOP can be changed into POS in term of some conditions,others thinks that we can justify that O-proposition can stand any conversion with equal quality,still others think that conversion could be done in O-proposition with respect to universal proposition-premised contraposition.Reviewing these works,I believe that they deviate from classical logic in subject matters which is beyond the deductive characteristics of reasoning,and that they misunderstand the logic meaning of particular quantifiers such as "some".Conversion can’t be performed in case of particular negative propositions. |
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| Keywords: | Particular Negative Propositions Conversion Justification |
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