Sylvester's Determinant Identity
where
is the submatrix of 
formed by the intersection of the subset 
of columns and 
of rows.- Hoffman-Singleton Graph
- Hoffman's Minimal Surface
- Hofstadter-Conway $10,000 Sequence
- Hofstadter Figure-Figure Sequence
- Hofstadter G-Sequence
- Hofstadter H-Sequence
- Hofstadter Male-Female Sequences
- Hofstadter Point
- Hofstadter Sequences
- Hofstadter's Q-Sequence
- Hofstadter Triangle
- Hole
- Holomorphic Function
- Holonomic Constant
- Holonomic Function
- Holonomy
- Homeoid
- Homeomorphic
- Homeomorphic Group
- Homeomorphic Type
- Homeomorphism
- Home Plate
- HOMFLY Polynomial
- Homoclinic Point
- Homogeneous Coordinates