Abstract
For each truth-functionally complete set of connectives, we construct a sound and complete natural deduction system containing no axioms and the smallest possible number of inference rules, namely one.
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This paper is mainly the work of the first author, an undergraduate student in the American University in Cairo, New Cairo, Egypt. It extends a project in a logic course taught by the second author (the corresponding author), a professor in the Department of Mathematics and Actuarial Science, who only set the problem, guided the student, and shaped the final paper.
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Elnashar, A., Lotfallah, W.B. Minimal Complete Propositional Natural Deduction Systems. J Philos Logic 47, 803–815 (2018). https://doi.org/10.1007/s10992-017-9450-1
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DOI: https://doi.org/10.1007/s10992-017-9450-1