Formulas
- Borel conjecture
- Borel fixed-point theorem
- Borel functional calculus
- Borel measure
- Borel regular measure
- Borel set
- Borell–Brascamp–Lieb inequality
- Borell–TIS inequality
- Borel–Carathéodory theorem
- Borel–de Siebenthal theory
- Bornology
- Borsuk–Ulam theorem
- Bose–Mesner algebra
- Bulgarian solitaire
- Bull graph