@inproceedings{5da20bcf8f4c4cf4afb53f763d42c1fb,
title = "An Extension of Connexive Logic C",
abstract = "In [38], one of the present authors introduced a system of connexive logic, called C, as a simple variant of Nelson's Logic N4, obtained by making a small change in the falsification clause for the conditional. This was an important step marked in the field of connexive logic since C can be seen as the first system of connexive logic with an intuitively plausible semantics. The aim of this article is to consider an extension of C obtained by adding the law of excluded middle with respect to the strong negation. The extension of C is motivated by three questions. The first question comes from a system CN devised by John Cantwell. The second question concerns how many more connexive theses, beside the basic theses of Aristotle and Boethius, can be captured within the framework suggested in the above paper. The third question addresses the relation between constructivity and the law of excluded middle. We will show that the quantified version of our extension of C satisfies the Existence Property and its dual, but fails to satisfy the Disjunction Property and its dual when the law of excluded middle is restricted to atomic formulas. We will also mention some open problems related to the new system introduced in this article.",
keywords = "Connexive logic, Constructive logic, Disjunction Property, Existence Property, FDE, Law of excluded middle, Many-valued logic, Nelson logic",
author = "Hitoshi Omori and Heinrich Wansing",
note = "Publisher Copyright: {\textcopyright} 2020 College Publications. All rights reserved.; 13th Conference on Advances in Modal Logic, AiML 2020 ; Conference date: 24-08-2020 Through 28-08-2020",
year = "2020",
language = "English",
isbn = "1904987206",
series = "Advances in Modal Logic",
publisher = "College Publications",
pages = "503--522",
editor = "Nicola Olivetti and Rineke Verbrugge and Sara Negri and Sara Negri and Gabriel Sandu",
booktitle = "Advances in Modal Logic, AiML 2020",
address = "United Kingdom",
}