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1. Verfasser: Petrakis, Iosif
Format: Preprint
Veröffentlicht: 2025
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Online-Zugang:https://arxiv.org/abs/2506.16433
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author Petrakis, Iosif
author_facet Petrakis, Iosif
contents We introduce a coinductive version of the well-foundedness of N that is used in our proof within minimal logic of the constructive counterpart CLNP to the standard least number principle LNP. According to CLNP, an inhabited complemented subset of N has a least element if and only if it is downset located. The use of complemented subsets of N in the formulation of CLNP, instead of subsets of N, allows a positive approach to the subject that avoids negation. Generalising the coinductive well-foundedness of N, we define $\exists$-well-founded sets and we prove their fundamental properties.
format Preprint
id arxiv_https___arxiv_org_abs_2506_16433
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Coinductive well-foundedness
Petrakis, Iosif
Logic
We introduce a coinductive version of the well-foundedness of N that is used in our proof within minimal logic of the constructive counterpart CLNP to the standard least number principle LNP. According to CLNP, an inhabited complemented subset of N has a least element if and only if it is downset located. The use of complemented subsets of N in the formulation of CLNP, instead of subsets of N, allows a positive approach to the subject that avoids negation. Generalising the coinductive well-foundedness of N, we define $\exists$-well-founded sets and we prove their fundamental properties.
title Coinductive well-foundedness
topic Logic
url https://arxiv.org/abs/2506.16433