Similar to GNS構成法

1 + 1 + 1 + 1 + ⋯

1/2 + 1/4 + 1/8 + 1/16 + ⋯

1/2 − 1/4 + 1/8 − 1/16 + ⋯

1/4 + 1/16 + 1/64 + 1/256 + ⋯

Kadomtsev–Petviashvili equation

P-adic analysis

Compression (functional analysis)

Apéry's constant

Abel–Plana formula

Alexandrov theorem

Uniform algebra

Operator norm

Spectral theory

Banach function algebra

Hundredth

Annals of Mathematics

Axiom (computer algebra system)

C*-algebra

Atiyah–Singer index theorem

Japanese minesweeper No. 7 (1938)

Japanese minesweeper No. 8 (1938)

Japanese minesweeper No. 10 (1938)