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THE SUBJECT MATTER OF LOGIC
Partial Evidence or Probable Inference
The Use and Application of Logic
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affirmative alternative analysis angles antilogism Archimedes argument Aristotle arithmetic mean assert assumptions axioms believe body called canon categorical categorical propositions categorical syllogism causal cause Chap conclusion connected consequences contradictory contrapositive deductive definiens definition demonstrated denoted determine discover discussion disjunctive distinct distributed elements employed enthymeme equal equivalent evidence examine example expressed fact factors fallacy false falsity formal geometry gism Hence Herodotus hypothesis hypothetical syllogism imply induction inference inquiry instances invariable knowledge l-class laws logical principles major premise mathematicians mathematics meaning measure method of agreement nature negative non-Euclidean geometry objects observed plane possible postulate predicate probability proof properties propo prove question reader reason regarded relation rule scientific method sense sitions subject matter Suppose syllogism symbols theorems theory things tion triangle true truth universal propositions valid verifiable virtue weight words