Modulus (Quadratic Invariants)
The quantity 
obtained by letting
 |  |  | (1) |
 | |  | (2) |
in
 | (3) |
 | |  | (4) |
 | |  | (5) |
 | |  | (6) |
and
 | (7) |
- Kanizsa Triangle
- Kantorovich Inequality
- Kaplan-Yorke Conjecture
- Kaplan-Yorke Dimension
- Kaplan-Yorke Map
- Kappa Curve
- Kaprekar Number
- Kaprekar Routine
- Kaps-Rentrop Methods
- Kapteyn Series
- Karatsuba Multiplication
- k-ary Divisor
- Katona's Problem
- Kauffman Polynomial F
- Kauffman Polynomial X
- k-Chain
- k-Circuit
- k-Coloring
- Kei
- Keith Number
- Keller's Conjecture
- Kelvin Functions
- Kelvin's Conjecture
- Kelvin Transformation
- Kempe Linkage