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arXiv · 2209.05238

A characterization of atomicity

Salvatore Tringali
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Abstract

In [Math. Proc. Cambridge Philos. Soc. 64 (1968), 251-264], P.M. Cohn famously claimed that a commutative domain is atomic if and only if it satisfies the ascending chain condition on principal ideals (ACCP). Some years later, a counterexample was provided by A. Grams in [Math. Proc. Cambridge Philos. Soc. 75 (1974), 321-329]: Every commutative domain with the ACCP is atomic, but not vice versa. This has led to the question of finding a sensible (ideal-theoretic) characterization of atomicity. The question (explicitly stated on p. 3 of A. Geroldinger and F. Halter-Koch's 2006 monograph on factorization) is still open. We settle it using the language of monoids and preorders.

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Salvatore Tringali. 2022-09-12. A characterization of atomicity. https://doi.org/10.1017/s0305004123000269

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