Rank (Group)
For an arbitrary finitely generated Abelian Group 
, the rank of is defined to be the rank of the Freegenerating Subset modulo its Torsion Subgroup. For a finitely generatedGroup, the rank is defined to be the rank of its ``Abelianization.''
- Harnack's Inequality
- Harnack's Theorems
- Harshad Number
- Hartley Transform
- Hart's Inversor
- Hart's Theorem
- HashLife
- Hasse-Davenport Relation
- Hasse Diagram
- Hasse-Minkowski Theorem
- Hasse Principle
- Hasse's Algorithm
- Hasse's Conjecture
- Hasse's Resolution Modulus Theorem
- Hat
- Haupt-Exponent
- Hausdorff Axioms
- Hausdorff-Besicovitch Dimension
- Hausdorff Dimension
- Hausdorff Measure
- Hausdorff Paradox
- Hausdorff Space
- Haversine
- h-Cobordism
- h-Cobordism Theorem