Does the Implication Elimination Rule Need a Minor Premise?

• Autorzy: Francez Nissim
• Języki publikacji: EN

Abstrakty

EN

The paper introduces NJ g , a variant of Gentzen’s NJ natural deduction system, in which the implication elimination rule has no minor premise. The NJ g -systems extends traditional ND-system with a new kind of action in derivations, assumption incorporation, a kind of dual to the assumption discharge action. As a result, the implication (I/E)-rules are invertible and, almost by definition, harmonious and stable, a major condition imposed by proof-theoretic semantics on ND-systems to qualify as meaning-conferring. There is also a proof-term assignment to NJ g -derivations, materialising the Curry-Howard correspondence for this system.

Słowa kluczowe

EN

natural deduction; NJ; proof-theoretic semantics; grounds for assertion; term assignment

• Wydawca: Uniwersytet Mikołaja Kopernika (Nicolaus Copernicus University in Toruń)
• Czasopismo: Logic and Logical Philosophy
• Rocznik: 2018
• Tom: 27
• Numer: 3
• Strony: 351-373

Daty

wydano

2018-09-15

Twórcy

autor

Francez Nissim

• Computer Science Department the Technion-IIT Haifa, Israel ,

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