Probability Inequality
If 
(
is a superset of 
), then 
.
- Trapdoor Function
- Trapezium
- Trapezohedron
- Trapezoid
- Trapezoidal Hexecontahedron
- Trapezoidal Icositetrahedron
- Trapezoidal Rule
- Traveling Salesman Constants
- Traveling Salesman Problem
- Trawler Problem
- Trebly Magic Square
- Tredecillion
- Tree
- Tree-Planting Problem
- Tree Searching
- Trefoil Curve
- Trefoil Knot
- Trench Diggers' Constant
- Triabolo
- Triacontagon
- Triacontahedron
- Triad
- Triakis Icosahedron
- Triakis Octahedron
- Triakis Tetrahedron