Similar to ランダー・パーキン・セルフリッジ予想

Arzelà–Ascoli theorem

Hadamard transform

Ackermann function

Atiyah–Singer index theorem

Sieve of Atkin

Apéry's constant

Apéry's theorem

Abel–Plana formula

Apollonius point

Apollonian gasket

Archimedean property

Twin circles

Algorithm

Artin L-function

Artin–Hasse exponential

Wedderburn–Artin theorem

Artinian module

Artinian ring

Artin–Schreier theory

Generalized Riemann hypothesis

Vojta's conjecture

Ulam spiral

Catalan's conjecture

Collatz conjecture

Sato–Tate conjecture

Singmaster's conjecture

Szpiro's conjecture

Sums of three cubes