Topics in mathematics
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- H-cobordismIn geometric topology and differential topology, an (n + 1)-dimensional cobordism W betwee
- H-vectorIn algebraic combinatorics, the h-vector of a simplicial polytope is a fundamental invaria
- Haar measureLeft-invariant (or right-invariant) measure on locally compact topological group
- Hadamard manifoldIn mathematics, a Hadamard manifold, named after Jacques Hadamard — more often called a Ca
- Hahn–Banach theoremTheorem on extension of bounded linear functionals
- Haïm BrezisFrench mathematician (1944–2024)
- Hall subgroupIn mathematics, specifically group theory, a Hall subgroup of a finite group G is a subgro
- Halsey RoydenHalsey Lawrence Royden, Jr. (September 26, 1928 – August 22, 1993) was an American mathema
- HandlebodyDecomposition of a manifold into standard pieces
- Harold Edwards (mathematician)American mathematician (1936–2020)
- Hartogs's extension theoremIn the theory of functions of several complex variables, Hartogs's extension theorem is a
- Hasse principleSolving integer equations from all modular solutions
- Hasse–Minkowski theoremLocal–global principle for quadratic forms
- Hausdorff dimensionInvariant measure of fractal dimension
- Hausdorff spaceIn topology and related branches of mathematics, a Hausdorff space ( HOWSS-dorf, HOWZ-dorf
- Hebrew numeralsNumeral system using letters of the Hebrew alphabet
- Heegner pointIn mathematics, a Heegner point is a point on a modular curve that is the image of a quadr
- Heinz HopfHeinz Hopf (19 November 1894 – 3 June 1971) was a German mathematician who worked on the f
- Heisenberg groupGroup in group theory and physics
- Henri BrocardFrench meteorologist and mathematician (1845–1922)
- Henry C. WenteHenry Christian Wente (August 18, 1936 – January 20, 2020) was an American mathematician,
- Henry Whitehead (bishop)Henry Whitehead (19 December 1853 – 14 April 1947) was an eminent Anglican bishop in the l
- HeptagonShape with seven sides
- Hermann GrassmannGerman polymath, linguist and mathematician (1809–1877)
- Hermann SchwarzGerman mathematician (1843–1921)
- Hermitian adjointConjugate transpose of an operator in infinite dimensions
- Hermitian symmetric spaceIn mathematics, a Hermitian symmetric space is a Hermitian manifold which at every point h
- Heron's formulaTriangle area in terms of side lengths
- Hilbert class fieldField in algebraic number theory
- Hilbert manifoldIn mathematics, a Hilbert manifold is a manifold modeled on Hilbert spaces. Thus it is a s
- Hilbert's second problemConsistency of the axioms of arithmetic
- Hirzebruch signature theoremIn differential topology, an area of mathematics, the Hirzebruch signature theorem (someti
- Hirzebruch–Riemann–Roch theoremIn mathematics, the Hirzebruch–Riemann–Roch theorem, named after Friedrich Hirzebruch, Ber
- Historical significanceHistorical significance is a historiographical key concept that explores and seeks to expl
- History of group theoryHistory of a branch of mathematics
- History of the function conceptAbout mathematical functions
- Hitchin–Thorpe inequalityIn differential geometry the Hitchin–Thorpe inequality is a relation which restricts the t
- HolonomyConcept in differential geometry
- Homoclinic orbitIn the study of dynamical systems, a homoclinic orbit is a path through phase space which
- Homogeneous spaceTopological space in group theory
- HomophilyProcess by which people befriend similar people
- Homotopy groupAlgebraic construct classifying topological spaces
- Homotopy lifting propertyIn mathematics, in particular in homotopy theory within algebraic topology, the homotopy l
- Homotopy theoryBranch of mathematics
- Homotopy type theoryType theory in logic and mathematics
- Hopf linkIn mathematical knot theory, the Hopf link is the simplest nontrivial link with more than
- Horseshoe mapIn the mathematics of chaos theory, a horseshoe map is any member of a class of chaotic ma
- Hugo Duminil-CopinFrench mathematician
- Hurwitz zeta functionIn mathematics, the Hurwitz zeta function is one of the many zeta functions. It is formall
- Hyperbolic geometric graphA hyperbolic geometric graph (HGG) or hyperbolic geometric network (HGN) is a special type
- Hyperbolic groupMathematical concept
- Hyperbolic volumeIn the mathematical field of knot theory, the hyperbolic volume of a hyperbolic link is th
- Hyperelliptic curveIn algebraic geometry, a hyperelliptic curve is an algebraic curve of genus g > 1, given b
- Hypergeometric functionFunction defined by a hypergeometric series
- HypersurfaceManifold or algebraic variety of dimension n in a space of dimension n+1
- HypotenuseLongest side of a right-angled triangle, the side opposite of the right angle