Coxeter Matrix
An 
Square Matrix 
with
 |  |  | |
 | |  |
for all
, ..., 
.See also Coxeter Group- Heteroclinic Point
- Heterogeneous Numbers
- Heterological Paradox
- Heteroscedastic
- Heterosquare
- Heuman Lambda Function
- Heun's Differential Equation
- Heuristic
- Hexa
- Hexabolo
- Hexacontagon
- Hexacronic Icositetrahedron
- Hexad
- Hexadecagon
- Hexadecimal
- Hexaflexagon
- Hexagon
- Hexagonal Number
- Hexagonal Pyramidal Number
- Hexagonal Scalenohedron
- Hexagonal Tiling
- Hexagon Polyiamond
- Hexagram
- Hexagrammum Mysticum Theorem
- Hexahedron