Abstract
Now we must examine the other kind (of relation expressed in conditional propositions), i.e. conflict. We say: A proposition which ex- 5 presses conflict by merely talking of conflict as in saying This statement is in conflict with that’ is not conditional. Also, a conditional proposition which expresses conflict may not be necessarily separative, since it is possible for a connective proposition to express conflict. What expresses conflict in a (separative) sentence is its literal form, namely the word ‘either’.
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Notes
The edited text reads aw not wa.The editor does not give any further readings; but in consulting the B.M. MS. we found that the text reads wa.
This is case (1) which he calls ‘real conflict’.
Avicenna uses the words ʿ mmā… wa immāʾ, which can be literally translated as ‘Either … and either’, to express the separative proposition.
The text in fact says that the first case is not true of the last division; and that the second case is not true of the second division, which does not make sense.
See 404, 5-12.
The text reads ‘the second’.
The text reads ‘the third’.
Reading with the majority of MSS. wa.
For an explanation of the conjunctive and the exceptive syllogisms see 389 and 390, 1-5, and the Introduction, pp. 18-20.
There is no such reference in the book.
Reading with F and J lā yakūnu instead of yakūnu.
Reading qad yakūnu instead of yakūnu.
Avicenna does not discuss what modern logicians call conjunctive propositions though, as his sentence shows, he includes them with conditional propositions.
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© 1973 D. Reidel Publishing Company Dordrecht, Holland
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Shehaby, N. (1973). On Separative-Conditional Propositions. In: The Propositional Logic of Avicenna. Synthese Historical Library, vol 7. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-2624-6_3
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