A Treatise on Logic, Or, The Laws of Pure Thought: Comprising Both the Aristotelic and Hamiltonian Analyses of Logical Forms, and Some Chapters of Applied LogicSever and Francis, 1866 - 450 էջ |
From inside the book
Արդյունքներ 6–ի 1-ից 5-ը:
Էջ 156
... Convertend ; after Conversion , it is the Converse . The logical doctrine of Immediate Inference by Conversion shows us when and why the truth of the Converse is a necessary consequence of the truth of the Convertend . In other words ...
... Convertend ; after Conversion , it is the Converse . The logical doctrine of Immediate Inference by Conversion shows us when and why the truth of the Converse is a necessary consequence of the truth of the Convertend . In other words ...
Էջ 158
... Convertend is , that men are included under the class of animals , not that they constitute all animals ; they are only some animals . Hence the Converse is , Some animals We have already seen that E is converted sim- ply into E ; but O ...
... Convertend is , that men are included under the class of animals , not that they constitute all animals ; they are only some animals . Hence the Converse is , Some animals We have already seen that E is converted sim- ply into E ; but O ...
Էջ 159
... Convertend by Rule First , and then convert simply . Thus , — Convertend . Infinitated equivalent . Converse of this . Some A are not B. Some men are not learned . Some A are not - B . Some not - B are A. Some men are unlearned . Some ...
... Convertend by Rule First , and then convert simply . Thus , — Convertend . Infinitated equivalent . Converse of this . Some A are not B. Some men are not learned . Some A are not - B . Some not - B are A. Some men are unlearned . Some ...
Էջ 161
... Convertend without regard to the Quantity of either ; it thus changes all to some , and , as we have just seen , it makes the total Quan- tity of the Converse inferior to that of the Convertend . But this is evidently wrong ; for the ...
... Convertend without regard to the Quantity of either ; it thus changes all to some , and , as we have just seen , it makes the total Quan- tity of the Converse inferior to that of the Convertend . But this is evidently wrong ; for the ...
Էջ 166
... Convertend . No X is Y. Converse . No Y is X. or causing the Subject and Predicate of a Judgment to change places with each other , but in such man- ner that if the Convertend is true , then the Converse Converse . will be true also . E ...
... Convertend . No X is Y. Converse . No Y is X. or causing the Subject and Predicate of a Judgment to change places with each other , but in such man- ner that if the Convertend is true , then the Converse Converse . will be true also . E ...
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Common terms and phrases
affirm the Consequent Affirmative already animal antecedent applied Aristotelic doctrine Aristotle attributes Axiom belong biped called Cause class of things conceived Concept Conclusion connotes Consequent considered contained Contradictory Contraposition Conversion Convertend Copula Definition denote deny determined Disjunctive Disjunctive Syllogism distinct Division enounced Enthymemes evidently exists explicated expressed Extension fact faculty Fallacy false Figure former Genus gism Hamilton Hence Hypothetical Immediate Inference individual Induction Inductive Reasoning Infinitation instance Intension Intuition knowledge language Laws of Thought Logic logicians Major Premise Marks Matter meaning Mediate Inference ment merely Middle Term mind Modus Modus Ponens Modus tollens Moods nature necessary Negative not-X not-Y notion objects observed particular peculiar Predicate principle properly Proposition Pure Thought Quality Quantity rational reasoning reduced reference relation respect Rule sion sophism Species Subalternation Subject sublating Sumption Syllogism three Judgments tion tive true truth Universal valid whole words