Aggregate
An archaic word for infinite Sets such as those considered by Georg Cantor. 
- Boolean Ring
- Boole's Inequality
- Borchardt-Pfaff Algorithm
- Border Square
- Bordism
- Bordism Group
- Borel-Cantelli Lemma
- Borel Determinacy Theorem
- Borel Measure
- Borel Probability Measure
- Borel Set
- Borel's Expansion
- Borel Sigma Algebra
- Borel Space
- Borromean Rings
- Borrow
- Borsuk's Conjecture
- Borwein Conjectures
- Bouligand Dimension
- Bound
- Boundary
- Boundary Conditions
- Boundary Map
- Boundary Point
- Boundary Set