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natural deduction

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natural deduction
n
(Philosophy / Logic) a system of formal logic that has no axioms but permits the assumption of premises of an argument. Such a system uses sequents to record which assumptions are operative at any stage Compare axiomatic [3]
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Topics include overlapping as a basic concept of subset spaces, representing public transport schedules as repeating trips, a heuristic approach to order events in narrative texts, and labeled natural deduction systems for a family of tense logics.
Temporal representation and reasoning; proceedings by SciTech Book News
He works through informal logic, including meanings and definition of language and fallacies, formal logic, including categorical propositions and syllogisms, propositional logic, natural deduction in propositional logic and predicate logic, inductive logic, including analogies, legal and moral reasoning, causality and Mill's methods, probability, statistical reasoning, and hypothetical and scientific reasoning.
A concise introduction to logic, 10th ed by Reference & Research Book News
Although his methods, rules and structures have lead to verification programs essential to computer science, and his work on natural deduction, the sequent calculus and ordinal proof theory are still considered advanced, his life eventually ran contrary to the passions of his nation.
Logic's lost genius; the life of Gerhard Gentzen by SciTech Book News
 
 
 
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