Wallis Sieve
A compact set 
with Area
created by punching a square hole of length
in the center of a square. In each of the eight squares remaining,punch out another hole of length 
, and so on.- Binomial Coefficient
- Binomial Distribution
- Binomial Expansion
- Binomial Formula
- Binomial Number
- Binomial Series
- Binomial Theorem
- Binomial Triangle
- Binormal Developable
- Binormal Vector
- Bioche's Theorem
- Biotic Potential
- Bipartite Graph
- Biplanar Double Point
- Bipolar Coordinates
- Bipolar Cylindrical Coordinates
- Biprism
- Bipyramid
- Biquadratefree
- Biquadratic Equation
- Biquadratic Number
- Biquadratic Reciprocity Theorem
- Biquaternion
- Birational Transformation
- Birch Conjecture