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：2025/11/19
Euler's totient function
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(number theory) The function that counts how many integers below a given integer are coprime to it.
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Euler's totient function
Euler's totient function counts the positive integers less than a given integer that are coprime to it, and it plays a central role in many results in number theory.
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Euler's totient function counts the positive integers less than a given integer that are coprime to it, and it plays a central role in many results in number theory.
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