Similar to クリーネの不動点定理

Alexander horned sphere

Alexander's theorem

Menelaus of Alexandria

List of things named after Alexander Grothendieck

Pavel Alexandrov

Alexandroff extension

Alexandrov theorem

Aleph number

Allen–Cahn equation

Aronszajn tree

Cryptography

Darkside communication group

Mental calculation

Ensemble Kalman filter

Dark figure of crime

Anscombe's quartet

Safe prime

Igor Ansoff

Anderson–Darling test

Stable curve

Stable marriage problem

Fixed-point theorem

Kakutani fixed-point theorem

Caristi fixed-point theorem

Schauder fixed-point theorem

Nielsen theory

Banach fixed-point theorem

Brouwer fixed-point theorem