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Volume 1, Issue 3 (2021)                   J Clin Care Skill 2021, 1(3): 185-194 | Back to browse issues page

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Darabi A. Effect of Propositions Division into Actuality, Mental and Factual on the Conditions of Some Syllogisms; Based on the Opinion of Contemporaries. J Clin Care Skill 2021; 1 (3) :185-194
URL: http://jpt.modares.ac.ir/article-6-51267-en.html
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Authors A. Darabi *
Iranian Institute of Philosophy, Tehran, Iran
* Corresponding Author Address: Iranian Institute of Philosophy, No. 6, Araklyan St., Neauphle-le-Château St, Tehran, Iran. Postal code: 1133614816
Abstract   (3606 Views)
Throughout the texts of contemporary logicians, it has been explicitly or implicitly stated that the division of propositions into actuality, mental and factual, has no effect on logical syllogisms. In the following text, first, by analyzing the opinions of contemporaries on the division of propositions into actuality, mental and factual, the differences and similarities of the opinions in this regard have been identified. Then we examine the position of the conditional's quantifier and its effect on the conditions of conditional-categorical syllogisms (conjunctive or exceptive) in the opinions of contemporary logicians. In the final step and based on the conditions of conditional-categorical syllogisms (conjunctive or exceptive), we have shown that some of the moods that most contemporaries have declared to be valid have counter-examples, and only with the factual of the categorical premises in all situations and for all samples will result.
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