JSTOR Daily

On an Interpretation of Second Order Quantification in First Order Intuitionistic Propositional Logic

This is a preview. Log in through your library . Abstract We prove the following surprising property of Heyting's intuitionistic propositional calculus, IpC. Consider the collection of formulas, φ, ...
JSTOR Daily

Defining Relevant Implication in a Propositionally Quantified S4

R. K. Meyer once gave precise form to the question of whether relevant implication can be defined in any modal system, and his answer was `no'. In the present paper, we extend S4, first with ...
Princeton University

Introductory Logic Exercises

Solutions are available by request for course instructors and the self-taught. These documents are intended for the spring 2024 version of PHI 201, Introductory Logic. However, they will be fine-tuned ...
Business Insider

This Simple Math Concept Went Nowhere For A Century And Then — BOOM — Computers

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