Sylvester's Signature
Diagonalize a form over the Rationals to
where all the entries are Integers and
, 
, ...are Relatively Prime to 
. Then Sylvester'ssignature is the sum of the 
-parts of the entries.See also p-Signature- Harary Graph
- Hard Hexagon Entropy Constant
- Hard Square Entropy Constant
- Hardy-Littlewood Conjectures
- Hardy-Littlewood Constants
- Hardy-Littlewood k-Tuple Conjecture
- Hardy-Littlewood Tauberian Theorem
- Hardy-Ramanujan Number
- Hardy-Ramanujan Theorem
- Hardy's Inequality
- Hardy's Rule
- Harmonic Addition Theorem
- Harmonic Analysis
- Harmonic Brick
- Harmonic Conjugate Function
- Harmonic Conjugate Points
- Harmonic Coordinates
- Harmonic Decomposition
- Harmonic Divisor Number
- Harmonic Equation
- Harmonic Function
- Harmonic-Geometric Mean
- Harmonic Homology
- Harmonic Logarithm
- Harmonic Map