New posts in hilbert-calculus

Difference between Gentzen and Hilbert Calculi

logic propositional-calculus hilbert-calculus

Difference between Logical Axioms and Rules of Inference

logic propositional-calculus axioms natural-deduction hilbert-calculus

Derive $P \to \neg \neg P$ in a structure with not and implies

logic propositional-calculus axioms hilbert-calculus