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Main Author: Freedman, Roy S.
Format: Preprint
Published: 2024
Subjects:
Online Access:https://arxiv.org/abs/2409.03784
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author Freedman, Roy S.
author_facet Freedman, Roy S.
contents Given a set of N propositions, if any pair is mutual exclusive, then the set of all propositions are N-way jointly mutually exclusive. This paper provides a new general counterexample to the converse. We prove that for any set of N propositional variables, there exist N propositions such that their N-way conjunction is zero, yet all k-way component conjunctions are non-zero. The consequence is that N-way joint mutual exclusion does not imply any pairwise mutual exclusion. A similar result is true for sets since propositional calculus and set theory are models for two-element Boolean algebra.
format Preprint
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institution arXiv
publishDate 2024
record_format arxiv
spellingShingle N-Way Joint Mutual Exclusion Does Not Imply Any Pairwise Mutual Exclusion for Propositions
Freedman, Roy S.
Discrete Mathematics
Given a set of N propositions, if any pair is mutual exclusive, then the set of all propositions are N-way jointly mutually exclusive. This paper provides a new general counterexample to the converse. We prove that for any set of N propositional variables, there exist N propositions such that their N-way conjunction is zero, yet all k-way component conjunctions are non-zero. The consequence is that N-way joint mutual exclusion does not imply any pairwise mutual exclusion. A similar result is true for sets since propositional calculus and set theory are models for two-element Boolean algebra.
title N-Way Joint Mutual Exclusion Does Not Imply Any Pairwise Mutual Exclusion for Propositions
topic Discrete Mathematics
url https://arxiv.org/abs/2409.03784