Euler's totient function

Euler's totient function
Tag	`0DAMHCT17R`
URI	`m2://0DAMHCT17R`
Kind	concept
Writing	W1 stated
MSC	11A25
Same as	Wikidata Q190026 Wikipedia Euler's totient function

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Summary

Euler's totient function $\varphi$ gives, for each positive integer $n$ , the number of integers from $1$ to $n$ that are coprime to $n$ . The definition of Euler's totient function gives the precise form.

What this node needs for W2

edge instance_of in: at least two examples (0 of 2)
edge not_instance_of in: at least one non-example (0 of 1)
edge specializes both: the more general notions and the special cases (0 of 1)

The writing levels say how complete the text of a node is. They do not measure its truth.

Sources

Web https://en.wikipedia.org/wiki/Euler%27s_totient_function, lead section

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Definitions

Euler's totient function 0VV04M41AN