A Text-book of Deductive Logic: For the Use of Students |
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Page 125
... converse . ( 2 ) No term should be distributed in the converse which was not distributed in the convertend . ( 3 ) The quality of the converse is the same as that of the convertend , —that is , the converse of an affirmative proposition ...
... converse . ( 2 ) No term should be distributed in the converse which was not distributed in the convertend . ( 3 ) The quality of the converse is the same as that of the convertend , —that is , the converse of an affirmative proposition ...
Page 126
... converse is ' Some mortal is man , ' ' At least one that is mortal is man , ' or ' Some mortal beings are men . ' If A is , B is : its converse is ' In some cases if B is , A is . ' The hypothetical also can thus be converted . ( 2 ) ...
... converse is ' Some mortal is man , ' ' At least one that is mortal is man , ' or ' Some mortal beings are men . ' If A is , B is : its converse is ' In some cases if B is , A is . ' The hypothetical also can thus be converted . ( 2 ) ...
Page 127
... converse I ' Some P is S ' follows . Hence the converse of I is I1 . Examples . - Some men are wise : its converse is ' At least one wise being is man . ' In some cases if A is , B is : its converse is ' In some cases if B is , A is ...
... converse I ' Some P is S ' follows . Hence the converse of I is I1 . Examples . - Some men are wise : its converse is ' At least one wise being is man . ' In some cases if A is , B is : its converse is ' In some cases if B is , A is ...
Page 128
... converse of I is I ; and the converse of E is E. The converse in these two cases has the same quality and quantity as the convertend ; and when this is the case , the process of conversion is called Simple Conversion . The converse of A ...
... converse of I is I ; and the converse of E is E. The converse in these two cases has the same quality and quantity as the convertend ; and when this is the case , the process of conversion is called Simple Conversion . The converse of A ...
Page 134
... converse . In contraposing a proposi- tion according to the older method , first obvert it , and then take the converse of the obverse . ( 1 ) All S is P. Examples . Its obverse is ' No S is not - P ' ; the converse of this obverse is ...
... converse . In contraposing a proposi- tion according to the older method , first obvert it , and then take the converse of the obverse . ( 1 ) All S is P. Examples . Its obverse is ' No S is not - P ' ; the converse of this obverse is ...
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Common terms and phrases
abstract terms accidens affirmed or denied animal antecedent applicable assertory attri attribute connoted axioms belong called categorical propositions categorical syllogism circle co-existence collection of attributes College concepts concrete consists contrapositive converse copula corresponding Deductive Logic definition differentia disjunctive proposition Edited elements example excluded existence expressed fallacy false falsity figure former genus given proposition gives rise Hamilton heat hypothetical proposition immediate inference implies individual thing Inductive Inductive Reasoning judgment latter laws of thought logicians major premiss many-worded material bodies meaning men are mortal metals middle term Mill's minor mortal negative not-A not-B not-P objects of thought obverse particular phenomena phenomenon possessed predicate principles probability quantity rational reasoning regarded relation represented rules signified Similarly singular sition species subalternation subcontrary subject and predicate substance syllogistic Theory of Predication things denoted third triangle true truth Ueberweg universal universal propositions valid moods violated by inferring words
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