Abstract: Artemov established an arithmetical interpretation for the Logics of Proofs LP CS, which yields a classical provability semantics for the modal logic S4. The Logics of Proofs are ...

This is a preview. Log in through your library . Journal Information The Journal of Symbolic Logic (JSL) was founded in 1936 and it has become the leading research journal in the field. It is issued ...

- [Frege and Aristotle on double-negation and law of excluded middle](#frege-and-aristotle-on-double-negation-and-law-of-excluded-middle) - [Combining proofs in classical ...

We present ribbon proofs, a diagrammatic system for proving program correctness based on separation logic. Ribbon proofs emphasise the structure of a proof, so are intelligible and pedagogical.

This is a preview. Log in through your library . Abstract In this paper we study the method of refutation rules in the modal logic K4. We introduce refutation rules with certain normal forms that ...

Abstract: We study a conservative extension of classical propositional logic distinguishing between four modes of statement: a proposition may be affirmed or denied, and it may be strong or classical.

If you already know how to use cabal packages or Nix flakes, and how to use Pandoc filters, you can skip directly to the tutorial. Note: Flakes must be enabled in your Nix or NixOS installation. One ...

Some scientific discoveries matter because they reveal something new — the double helical structure of DNA, for example, or the existence of black holes. However, some revelations are profound because ...

Hand-optimized assembly language code is often difficult to formally verify. This paper combines Hoare logic with verified code transformations to make it easier to verify such code. This approach ...