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Enumeration

Hobbies

The Möbius Function

29th October 2018 OldTrout 2281 Comments

The Möbius function is denoted by , where is the Greek letter mu. Depending on the factorisation of , the function takes the values . The last says that if is even, then and if [more…]

Hobbies

Euler’s Totient Function

6th August 2018 OldTrout 1964 Comments

Euler’s totient function counts the number of positive integers up to that are relatively prime to , where is considered to be relatively prime to all .  These numbers are called the totatives of . [more…]

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