Description
This is a book about the proof-theoretic system, which is a simpler and more illuminating method than alternative approaches. It is also used to understand natural deduction.
Prawitz's theories form the basis of intuitionistic type theory, and his inversion principle constitutes the foundation of most modern accounts of proof-theoretic semantics. The proof-theoretical system represents a simpler and more illuminating method than alternative approaches, and this volume offers a succinct, coherent illustration of its applications to natural deduction. 1965 edition.