Similar to カービー・ジーベンマン不変量

J-invariant

Affine connection

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 + ⋯

Hundredth

4-manifold

Annals of Mathematics

Axiom (computer algebra system)

Alexander horned sphere

Handlebody

Farrell–Jones conjecture

Rokhlin's theorem

Donaldson theory

Closed manifold

Poincaré duality

Japanese minesweeper No. 7 (1938)

Japanese minesweeper No. 8 (1938)

Japanese minesweeper No. 10 (1938)

12th SS Panzer Division Hitlerjugend