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What does "0 .. °" mean in UML?

The analysis from a UML diagram colleague contains the following:

0..°

I am familiar with 0 .. * and such, but not with the previous one. Any ideas? It's a typo? It was used throughout the document.

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2 answers

It looks like a typo.

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Assuming this looks like a multiplicity: this is a typo or some kind of conversion error. According to the UML specification, the upper bound of the multiplicity is of type UnlimitedNatural and

LiteralUnlimitedNatural is displayed either as a sequence of numbers, or as an asterisk (*), where the asterisk indicates unlimited (rather than infinity).

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Source: https://habr.com/ru/post/1302737/

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