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Logic seminar

Hyper Natural Deduction

Arnold Beckmann
Swansea University


Monday, 21. May 2018 - 14:00 to 15:30

in IM, rear building, ground floor

We introduce Hyper Natural Deduction as an extension of Gentzen's Natural Deduction system by communication like rules. The motivation is to obtain a natural deduction like system which is equivalent to Avron's Hypersequent Calculus for Goedel-Dummett Logic, and which permits natural conversion rules for normalisation as an extension of the well-known conversion rules for Natural Deduction. The ultimate goal of this project is to establish a Curry-Howard correspondence to some (yet to be found) model of parallel computation. An additional aim is to shed further light on Avron's suggestion [in A. Avron: Hypersequents, Logical Consequence and Intermediate Logics for Concurrency. Annals of Mathematics and Artificial Intelligence, 4(1991), 225-248] that a hypersequent can be thought of as a multiprocess.

This is joint work with Norbert Preining, supported by a Royal Society Daiwa Anglo-Japanese Foundation International Exchanges Award #IE130639.