Similar to メビウス関数

Ackermann function

Kneser's theorem (combinatorics)

Partition function (number theory)

Euler's totient function

Chebyshev function

Möbius inversion formula

P-adic Teichmüller theory

Vieta jumping

Eisenstein integer

Artin–Hasse exponential

Small set (combinatorics)

Sumset

Pentagonal number theorem

Catalan's constant

Q-analog

Sicherman dice

Singmaster's conjecture

Stirling number

Sieve theory

Motzkin number

Ramanujan's congruences

Arithmetic function

Aliquot sequence

Additive function

Multiplicative function

Superabundant number

Dirichlet character