On a certain characterisation of the semigroup of positive natural numbers with multiplication
In this paper we continue our investigation concerning the concept of a liken. This notion has been defined as a sequence of non-negative real numbers, tending to infinity and closed with respect to addition in R. The most important examples of likens are clearly the set of natural numbers N with a...
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| Format: | Article |
| Language: | deu |
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Sciendo
2022-11-01
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| Series: | Annales Universitatis Paedagogicae Cracoviensis: Studia Mathematica |
| Subjects: | |
| Online Access: | https://studmath.up.krakow.pl/article/view/9607 |