Similar to クリロフ＝ボゴリューボフの定理

Apéry's constant

Apéry's theorem

Abel–Plana formula

Apollonian gasket

Apollonius point

Erlang distribution

Archimedes's cattle problem

Archimedean property

Algorithm

Artin L-function

Artin–Hasse exponential

Wedderburn–Artin theorem

Artinian module

Artinian ring

Artin–Schreier theory

Artin reciprocity

Artin–Rees lemma

Albanese variety

Alexander polynomial

List of things named after Alexander Grothendieck

Anscombe's quartet

Anderson–Darling test

Gauss–Kuzmin–Wirsing operator

Krein–Milman theorem

Root test

Stolz–Cesàro theorem