Similar to 原始再帰関数

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

Tree (abstract data type)

Retranslation

Transfinite induction

Droste effect

Left recursion

Tail call

Recursive islands and lakes

Infinite loop

Anonymous recursion