Null Function
A null function 
satisfies
 | (1) |
, so | (2) |
 | (3) |
- Khintchine-Lévy Constant
- Khintchine's Constant
- Khovanski's Theorem
- Kiepert's Conics
- Kiepert's Hyperbola
- Kiepert's Parabola
- Kieroid
- Killing's Equation
- Killing Vectors
- Kimberling Sequence
- Kimberling Shuffle
- Kings Problem
- King Walk
- Kinney's Set
- Kinoshita-Terasaka Knot
- Kinoshita-Terasaka Mutants
- Kirby Calculus
- Kirby's List
- Kirkman's Schoolgirl Problem
- Kirkman Triple System
- Kissing Circles Problem
- Kissing Number
- Kiss Surface
- Kite
- Klarner-Rado Sequence