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Toast2017-07-28 20:44:49
Programming
Toast, 2017-07-28 20:44:49

What does f:N -> N mean?

The wikipedia article Computable function says "it's a set of functions of the form f:N -> N", which means something like a function f with a domain of definition N and a range of values ​​N ? Or what, I can’t fully understand the article, please help.

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