Forest
A Graph without any Circuits (Cycles), whichtherefore consists only of Trees. A forest with 
components and 
nodes has 
Edges.
- Jones Polynomial
- Jonquière's Function
- Jordan Algebra
- Jordan Curve
- Jordan Curve Theorem
- Jordan Decomposition Theorem
- Jordan-Hölder Theorem
- Jordan Measure
- Jordan Polygon
- Jordan's Inequality
- Jordan's Lemma
- Josephus Problem
- Jug
- Jugendtraum
- Juggling
- Julia Fractal
- Julia Set
- Jump
- Jump Angle
- Jumping Champion
- Jung's Theorem
- Just If
- Just One
- Kabon Triangles
- Kac Formula