Similar to 二重平方数

A¹ homotopy theory

A∞-operad

Ba space

BCH code

BCJR algorithm

Broyden–Fletcher–Goldfarb–Shanno algorithm

Berndt–Hall–Hall–Hausman algorithm

BPP (complexity)

BQP

Brilliant (website)

Bulletin de la Société Mathématique de France

B-spline

C0-semigroup

Calculus on Manifolds (book)

Catalogue of Triangle Cubics

Courant–Friedrichs–Lewy condition

Circumgon

CMA-ES

Complex multiplication of abelian varieties

CM-field

Co-NP

Cramer–Shoup cryptosystem

Crux Mathematicorum

CR manifold

CW complex

C*-algebra