Deductive Logic by St. George William Joseph Stock
page 89 of 381 (23%)
page 89 of 381 (23%)
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297. If this were so, it is plain that the number of possible
propositions would be exactly doubled, and that, instead of four forms, we should now have to recognise eight, which may be expressed as follows-- 1. All A is all B. ([upsilon]). 2. All A is some B. ([Lambda]). 3. No A is any B. ([Epsilon]). 4. No A is some B. ([eta]). 5. Some A is all B. ([Upsilon]). 6. Some A is some B. ([Iota]). 7. Some A is not any B. ([Omega]). 8. Some A is not some B. ([omega]). 298. It is evident that it is the second of the above propositions which represents the original A, in accordance with the rule that 'No affirmative propositions distribute their predicate' ( 293). 299. The third represents the original E, in accordance with the rule that 'All negative propositions distribute their predicate.' 300. The sixth represents the original I, in accordance with the rule that 'No affirmative propositions distribute their predicate.' |
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