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Autor principal: Semenov, Stanislav
Formato: Preprint
Publicado: 2025
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Acceso en línea:https://arxiv.org/abs/2503.18575
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author Semenov, Stanislav
author_facet Semenov, Stanislav
contents Cantor's diagonal method is traditionally used to prove the uncountability of the set of all infinite binary sequences. This paper analyzes the expressive limits of this method. It is shown that under any constructive application -- including generalizations with computable permutations and infinite hierarchies of diagonal extensions -- the resulting set remains countable. Thus, the method demonstrates the incompleteness of countable coverage but is unable to generate an uncountable set. This highlights its limitations as a constructive tool and reveals the boundary between constructive enumerability and the completeness of the continuum.
format Preprint
id arxiv_https___arxiv_org_abs_2503_18575
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Constructive Limits of Cantor's Diagonal Method: Countability, Enumerability, and the Impossibility of Exhausting the Continuum
Semenov, Stanislav
General Mathematics
03D80, 03E10, 03B70
F.4.1
Cantor's diagonal method is traditionally used to prove the uncountability of the set of all infinite binary sequences. This paper analyzes the expressive limits of this method. It is shown that under any constructive application -- including generalizations with computable permutations and infinite hierarchies of diagonal extensions -- the resulting set remains countable. Thus, the method demonstrates the incompleteness of countable coverage but is unable to generate an uncountable set. This highlights its limitations as a constructive tool and reveals the boundary between constructive enumerability and the completeness of the continuum.
title Constructive Limits of Cantor's Diagonal Method: Countability, Enumerability, and the Impossibility of Exhausting the Continuum
topic General Mathematics
03D80, 03E10, 03B70
F.4.1
url https://arxiv.org/abs/2503.18575