Intuitionistic Existential Instantiation and Epsilon Symbol
Abstract
A natural deduction system for intuitionistic predicate logic with existential \ instantiation rule presented here uses Hilbert's -symbol. It is conservative over intuitionistic predicate logic. We provide a completeness proof for a suitable Kripke semantics, sketch an approach to a normalization proof, survey related work and state some open problems. Our system extends intuitionistic systems with -symbol due to A. Dragalin and Sh. Maehara.
0
Turn this paper into a lesson
ArcXiv compiles a structured reading guide from this paper's metadata: plain-English importance, contributions, prerequisite concepts, which sections to read first, flashcards, and a quiz. Grounded in the abstract, never invented.