Areal Coordinates
Trilinear Coordinates normalized so that
When so normalized, they become the Areas of the Triangles
, 
, and
, where 
is the point whose coordinates have been specified.- Knot Vector
- Knödel Numbers
- Kochansky's Approximation
- Koch Antisnowflake
- Koch Island
- Koch Snowflake
- Koebe Function
- Koebe's Constant
- Kollros' Theorem
- Kolmogorov-Arnold-Moser Theorem
- Kolmogorov Complexity
- Kolmogorov Constant
- Kolmogorov Entropy
- Kolmogorov-Sinai Entropy
- Kolmogorov-Smirnov Test
- Korselt's Criterion
- Kovalevskaya Exponent
- Kozyrev-Grinberg Theory
- k-Partite Graph
- Kramers Rate
- Krawtchouk Polynomial
- Kreisel Conjecture
- Kronecker Decomposition Theorem
- Kronecker Delta
- Kronecker Product