formal logic

Example Sentences

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Late in 1847 De Morgan published his principal logical treatise, called Formal Logic, or the Calculus of Inference, Necessary and Probable.

From Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 2 "Demijohn" to "Destructor" by Various

It is also said to invert the order of thought; as if thought had only one order, or as if the order of thought had anything to do with Formal Logic.

From Logic Deductive and Inductive by Read, Carveth

This convenient assumption, however, ultimately necessitates an abstraction from meaning, though Formal Logic does not avow this openly.

From Pragmatism by Murray, D. L.

Without an authoritative Logical Dictionary to refer to, where all contradictories, synonyms, and contraries may be found on record, Formal Logic will hardly sanction the free play of common sense.

From Logic Deductive and Inductive by Read, Carveth

The attitude toward Logic of the Pragmatists or Humanists may best be studied in Dr. Schiller's Formal Logic, and in Mr. Alfred Sidgwick's Process of Argument and recent Elementary Logic.

From Logic Deductive and Inductive by Read, Carveth