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# Mathematics Encyclopedia

# H

A - B - C - D - E - F - G - H - I - J - K - L - M -

H-closed space

H-cobordism

H-derivative

H-index

H-infinity methods in control theory

H-matrix (iterative method)

H-maxima transform

H-principle

H-space

H square

H-stable potential

H-theorem

H topology

H tree

H-vector

Haag's theorem

Haagerup property

Haaland equation

Haar condition

Haar space

Haar system

Haar wavelet

Haar's tauberian theorem

Haboush's theorem

Hacettepe Journal of Mathematics and Statistics

Hackenbush

Hadamard code

Hadamard conjecture

Hadamard manifold

Hadamard product

Hadamard regularization

Hadamard–Rybczynski equation

Hadamard space

Hadamard theorem

Hadamard three-circle theorem

Hadamard three-lines theorem

Hadamard transform

Hadamard's gamma function

Hadamard's inequality

Hadamard's lemma

Hadamard's maximal determinant problem

Hadamard's method of descent

Hadjicostas's formula

Hadwiger conjecture (combinatorial geometry)

Hadwiger conjecture (graph theory)

Hadwiger hypothesis

Hadwiger–Finsler inequality

Hadwiger number

Hadwiger's theorem

Hafner–Sarnak–McCurley constant

Hafnian

Hagen–Poiseuille equation

Hahn embedding theorem

Hahn–Exton q-Bessel function

Hahn–Kolmogorov theorem

Hahn series

Haidao Suanjing

Hairy ball theorem

Hájek–Le Cam convolution theorem

Hajek projection

Hajós construction

Hajós's theorem

Halasz mean value theorem

Halbert L. Dunn Award

Half-disk topology

Half-exponential function

Half graph

Half-integer

Half-life

Half-logistic distribution

Half-martingale

Half-normal distribution

Half-period ratio

Half range Fourier series

Half-side formula

Half-space

Half-space (geometry)

Half time (physics)

Half-transitive graph

Half-plane

Hall–Higman theorem

Hall–Janko graph

Hall polynomial

Hall–Petresco identity

Hall plane

Hall-type theorems for hypergraphs

Hall violator

Hall word

Hall's identity

Hall's marriage theorem

Hall's theorem

Hall's universal group

Halley's method

Halphen pencil

Halperin conjecture

Halpern–Läuchli theorem

Halting problem

Halton sequence

Halved cube graph

Hamilton-Jacobi theory

Hamburg Mathematical Society

Hamburger moment problem

Hamilton Institute

Hamilton–Ostrogradski principle

Hamilton–Jacobi–Bellman equation

Hamilton–Jacobi equation

Hamilton Walk

Hamilton's principle

Hamiltonian

Hamiltonian (control theory)

Hamiltonian (quantum mechanics)

Hamiltonian coloring

Hamiltonian complexity

Hamiltonian cycle polynomial

Hamiltonian decomposition

Hamiltonian field theory

Hamiltonian fluid mechanics

Hamiltonian matrix

Hamiltonian mechanics

Hamiltonian Monte Carlo

Hamiltonian path

Hamiltonian path problem

Hamiltonian vector field

Hammersley–Clifford theorem

Hammerstein equation

Hamming code

Hamming distance

Hamming graph

Hamming scheme

Hamming weight

Hamming(7,4)

Hampshire College Summer Studies in Mathematics

Hanan grid

Handle theory

Handbook of Automated Reasoning

Handbook of mathematical functions

Handedness and mathematical ability

Handle decomposition

Handle decompositions of 3-manifolds

Handlebody

Handshaking lemma

Hankel functions

Hankel matrix

Hankel operator

Hankel singular value

Hankel transform

Hann function

Hanna Neumann conjecture

Hannan Medal

Hannan–Quinn information criterion

Hanner polytope

Hanner's inequalities

Hanoi graph

Hans Schneider Prize in Linear Algebra

Hans Sluga

Hansen's problem

Hapax legomenon

Happy ending problem

Happy number

Happy prime

Harada–Norton group

Harary's generalized tic-tac-toe

Harborth graph

Harcourt's theorem

Hard–easy effect

Hard hexagon model

Harder–Narasimhan stratification

Hardness of approximation

Hardy classes

Hardy field

Hardy hierarchy

Hardy–Littlewood circle method

Hardy–Littlewood inequality

Hardy–Littlewood maximal function

Hardy–Littlewood tauberian theorem

Hardy–Littlewood zeta-function conjectures

Hardy notation

Hardy–Ramanujan Journal

Hardy–Ramanujan theorem

Hardy space

Hardy–Weinberg principle

Hardy transform

Hardy variation

Hardy-Weinberg law

Harish-Chandra character

Harish-Chandra's regularity theorem

Harish-Chandra Research Institute

Harish-Chandra theorem

Harish-Chandra's Ξ function

Harish-Chandra's c-function

Harish-Chandra's function

Harish-Chandra's regularity theorem

Harish-Chandra's Schwartz space

Harmonic

Harmonic (mathematics)

Harmonic conjugate

Harmonic coordinates

Harmonic cross-ratio

Harmonic differential

Harmonic distribution

Harmonic Maass form

Harmonic map

Harmonic mean p-value

Harmonic measure

Harmonic morphism

Harmonic number

Harmonic oscillator

Harmonic pitch class profiles

Harmonic spectrum

Harmonic wavelet transform

Harmonices Mundi

Harmonious coloring

Harmonious set

Harmonograph

Harmony search

Harnack's curve theorem

Harnack's inequality

Harnack's principle

Harries graph

Harries–Wong graph

Harris chain

Harrop formula

Harshad number

Hartley kernel

Hartley's test

Hartman–Grobman theorem

Hartogs lemma

Hartogs number

Hartogs–Rosenthal theorem

Hartogs's extension theorem

Hartogs's theorem

Hartogs–Laurent series

Hartree equation

Hartree-Fock

Hartshorne ellipse

Haruki's Theorem

Harvard–MIT Mathematics Tournament

Hasegawa–Mima equation

Haseman–Elston regression

Hasse–Arf theorem

Hasse–Davenport relation

Hasse diagram

Hasse invariant

Hasse invariant of a quadratic form

Hasse invariant of an algebra

Hasse–Minkowski theorem

Hasse principle

Hasse–Schmidt derivation

Hasse–Weil zeta function

Hasse–Witt matrix

Hasse's theorem

Hasse's theorem on elliptic curves

Hasse's theorem on elliptic curves

Hatch mark

Hattori–Stong theorem

Hauksbók

Hauptvermutung

Hausdorff Center for Mathematics

Hausdorff density

Hausdorff gap

Hausdorff maximal principle

Hausdorff measure

Hausdorff Medal

Hausdorff moment problem

Hausdorff paradox

Hausdorff summation method

Hautus lemma

Havel–Hakimi algorithm

Haven (graph theory)

Haversine formula

Hawaiian earring

Haybittle–Peto boundary

Haynsworth inertia additivity formula

Hazard ratio

Hazen–Williams equation

HCS clustering algorithm

Head normal form

Healthy user bias

Heap (mathematics)

Heap's algorithm

Heaps' law

Hearing the shape of a drum

Heart

Heat equation

Heat kernel

Heat kernel signature

Heath-Brown–Moroz constant

Heaviside cover-up method

Heaviside step function

Heavy path decomposition

Heavy-tailed distribution

Heavy traffic approximation

Heawood conjecture

Heawood graph

Heawood number

Hebb rule

Hecke algebra

Hecke algebra (disambiguation)

Hecke algebra of a finite group

Hecke algebra of a locally compact group

Hecke algebra of a pair

Hecke character

Hecke L-function

Hecke operator

Heckman correction

Hectogon

Hector Medal

Hedetniemi conjecture

Hedgehog space

Heegaard decomposition

Heegaard diagram

Heegaard splitting

Heesch's problem

Hegarty Maths

Heh (god)

Height (abelian group)

Height function

Height zeta function

Heilbronn Institute for Mathematical Research

Heilbronn set

Heilbronn triangle problem

Heine–Borel theorem

Heine–Cantor theorem

Heine–Stieltjes polynomials

Heine's identity

Heinz Hopf Prize

Heinz-Kato inequality

Heinz-Kato-Furuta inequality

Heisenberg picture

Heisenberg representation

Hekat

Held group

Held–Karp algorithm

Helical boundary conditions

Helical calculus

Helical line

Hellin's law

Hellinger–Toeplitz theorem

Helly–Bray theorem

Helly family

Helly number

Helly space

Helly's selection theorem

Helly's theorem

Helmert transformation

Helmert–Wolf blocking

Helmholtz decomposition

Helmholtz theorem

Helmholtz theorem (classical mechanics)

Helmholtz's theorems

Hemi-cuboctahedron

Hemi-dodecahedron

Hemi-icosahedron

Hemi-octahedron

Hemicompact space

Hemicontinuity

Hemicube (geometry)

Hemihelix

Hemiperfect number

Hemipolyhedron

Hendecagon

Hendecagonal antiprism

Hendecagonal prism

Hendecagram

Hendecagrammic prism

Hendecahedron

Henkin construction

Hennessy-Milner logic

Henri Poincaré Prize

Henson graph

Henselization of a valued field

Heptacontagon

Heptadecagon

Heptadecahedron

Heptadiagonal matrix

Heptagonal antiprism

Heptagonal bipyramid

Heptagonal number

Heptagonal prism

Heptagonal pyramidal number

Heptagonal tiling

Heptagonal tiling honeycomb

Heptagonal trapezohedron

Heptagonal triangle

Heptagram

Heptagrammic antiprism (7/2)

Heptagrammic antiprism (7/3)

Heptagrammic crossed-antiprism

Heptagrammic cupola

Heptagrammic-order heptagonal tiling

Heptagrammic prism (7/2)

Heptagrammic prism (7/3)

Heptahedron

Heptellated 8-simplexes

Heptomino

Herbrand interpretation

Herbrand normal form

Herbrand quotient

Herbrand–Ribet theorem

Herbrand structure

Herbrand's theorem

Herbrandization

Herchel Smith Professorship of Pure Mathematics

Hereditarily countable set

Hereditarily finite set

Hereditarily normal space

Hereditarily paracompact space

Hereditarily well-founded set

Hereditary C*-subalgebra

Hereditary property

Hereditary ring

Hereditary set

Herglotz formula

Hermann algorithms

Hermite constant

Hermite distribution

Hermite equation

Hermite–Hadamard inequality

Hermite interpolation

Hermite–Minkowski theorem

Hermite normal form

Hermite number

Hermite polynomials

Hermite reciprocity

Hermite ring

Hermite spline

Hermite transform

Hermite's cotangent identity

Hermite's identity

Hermite's problem

Hermitian adjoint

Hermitian connection

Hermitian function

Hermitian hat wavelet

Hermitian manifold

Hermitian matrix

Hermitian symmetric space

Hermitian variety

Hermitian wavelet

Hermitian Yang–Mills connection

Heron's formula

Heronian tetrahedron

Herringbone pattern

Herschel–Bulkley fluid

Herschel graph

Herz–Schur multiplier

Hess triangle

Hesse normal form

Hesse's principle of transfer

Hesse's theorem

Hessenberg matrix

Hessenberg variety

Hessian automatic differentiation

Hessian equation

Hessian form of an elliptic curve

Hessian matrix

Hessian pair

Hessian polyhedron

Heston model

Heteroclinic bifurcation

Heteroclinic network

Heterogeneous random walk in one dimension

Heteroscedasticity

Heteroscedasticity-consistent standard errors

Heun function

Heun's method

Hewitt–Savage zero–one law

Hex (board game)

Hexacode

Hexacontagon

Hexacontatetragon

Hexadecagon

Hexadecahedron

Hexadecimal

Hexafoil

Hexagonal antiprism

Hexagonal bifrustum

Hexagonal bipyramid

Hexagonal lattice

Hexagonal number

Hexagonal prism

Hexagonal pyramid

Hexagonal pyramidal number

Hexagonal tiling

Hexagonal tiling honeycomb

Hexagonal tiling-triangular tiling honeycomb

Hexagonal tortoise problem

Hexagonal trapezohedron

Hexagram

Hexahedron

Hexany

Hexapawn

Hexecontahedron

Hexic 7-cubes

Hexicated 7-cubes

Hexicated 7-orthoplexes

Hexicated 7-simplexes

Hexicated 8-simplexes

Hexomino

Heyde theorem

Heyting algebra

Heyting arithmetic

Heyting field

Hicks equation

Hicksian demand function

Hidato

Hidden algebra

Hidden attractor

Hidden Field Equations

Hidden Figures (book)

Hidden linear function problem

Hidden Markov model

Hidden Markov random field

Hidden semi-Markov model

Hidden subgroup problem

Hierarchical closeness

Hierarchical clustering of networks

Hierarchical constraint satisfaction

Hierarchical decision process

Hierarchical Dirichlet process

Hierarchical generalized linear model

Hierarchical hidden Markov model

Hierarchical linear modeling

Hierarchical matrix

Hierarchical RBF

Hierarchy (mathematics)

Higgs bundle

Higgs mechanism

Higgs prime

High (computability)

High availability

High-dimensional model representation

High-dimensional statistics

High-resolution scheme

High School Attached to Beijing University of Technology

Higher category theory

Higher-dimensional algebra

Higher-dimensional gamma matrices

Higher local field

Higher-order compact finite difference scheme

Higher-order factor analysis

Higher-order function

Higher-order grammar

Higher-order logic

Higher-order operad

Higher-order singular value decomposition

Higher-order statistics

Higher residuosity problem

Higher spin alternating sign matrix

Higher Topos Theory

Highest averages method

Highest-weight category

Highly irregular graph

Highly optimized tolerance

Highly powerful number

Highly structured ring spectrum

Highly totient number

Higman group

Higman–Sims asymptotic formula

Higman–Sims graph

Higman–Sims group

Higman's embedding theorem

Higman's lemma

Higraph

Hilbert algebra

Hilbert basis

Hilbert basis (linear programming)

Hilbert–Bernays paradox

Hilbert–Bernays provability conditions

Hilbert–Burch theorem

Hilbert C*-module

Hilbert class field

Hilbert–Smith conjecture

Hilbert's irreducibility theorem

Hilbert's paradox of the Grand Hotel

Hilbert's problems : 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Himmelblau's function

Hindley–Milner type system

Hindmarsh–Rose model

Hindu–Arabic numeral system

Hindu units of time

Hindustani numerals

Hinged dissection

Hiptmair-Xu preconditioner

Hironaka decomposition

Hironaka's example

Hiroshima Mathematical Journal

Hirsch conjecture

Hirschberg's algorithm

Hirzebruch–Riemann–Roch theorem

Historical dynamics

Historiometry

History monoid

History of algebra

History of ancient numeral systems

History of arithmetic

History of artificial neural networks

History of calculus

History of computer science

History of computing

History of Grandi's series

History of Hindu Mathematics

History of knot theory

History of large numbers

History of logarithms

History of logic

History of Lorentz transformations

History of manifolds and varieties

History of mathematical notation

History of mathematics

History of Maxwell's equations

History of measurement

History of network traffic models

History of numerical solution of differential equations using computers

History of probability

History of quaternions

History of statistics

History of the Church–Turing thesis

History of the function concept

History of the Hindu–Arabic numeral system

History of the separation axioms

History of the Theory of Numbers

History of topos theory

History of trigonometry

History of type theory

History of variational principles in physics

Hitchin functional

Hitchin–Thorpe inequality

Hitting time

HNN-extension

Hjulström curve

HM-GM-AM-QM inequalities

HN group

HNN extension

HO (complexity)

Hobbes–Wallis controversy

Hobby–Rice theorem

Hoberman sphere

Hochschild homology

Hockey-stick identity

Hodge, William Vallance Douglas

Hodge algebra

Hodge–Arakelov theory

Hodge bundle

Hodge index theorem

Hodge star operator

Hodge cycle

Hodge–Tate module

Hodge theorem

Hodge theory

Hodges–Lehmann estimator

Hodgkin–Huxley model

HoDoMS

Hoeffding's independence test

Hoeffding's inequality

Hoeffding's lemma

Hoffman graph

Hoffman–Singleton graph

Hofstadter points

Hofstadter's butterfly

Hokkien numerals

Hoklas code

Hölder condition

Hölder summation

Hölder's inequality

Hölder's theorem

Holditch's theorem

Holland's schema theorem

Hollow matrix

Holm–Bonferroni method

Holmes–Thompson volume

Holmgren's uniqueness theorem

Holmström's theorem

Holomorph (mathematics)

Holomorphic curve

Holomorphic discrete series representation

Holomorphic functional calculus

Holomorphic Lefschetz fixed-point formula

Holomorphic separability

Holomorphic tangent bundle

Holomorphic vector bundle

Holomorphically convex hull

Holonomic

Holonomic basis

Holonomic function

Holonomy

Holtsmark distribution

Holyhedron

Homeomorphism (graph theory)

Homeomorphism group

Homeotopy

HOMFLY polynomial

Homicidal chauffeur problem

Homoclinic bifurcation

Homoclinic connection

Homogeneity (statistics)

Homogeneous (large cardinal property)

Homogeneous coordinate ring

Homogeneous coordinates

Homogeneous differential equation

Homogeneous distribution

Homogeneous function

Homogeneous graph

Homogeneous linear equation

Homogeneous relation

Homogeneous space

Homogeneous tree

Homogeneous variety

Homogeneously Suslin set

Homography

Homography (computer vision)

Homological conjectures in commutative algebra

Homological conjectures in commutative algebra

Homological connectivity

Homological dimension

Homological integration

Homological mirror symmetry

Homological stability

Homology (mathematics)

Homology manifold

Homology, Homotopy and Applications

Homomorphic encryption

Homomorphic equivalence

Homomorphic secret sharing

Homomorphic signatures for network coding

Homomorphism

Homoscedasticity

Homothetic center

Homothetic transformation

Homotopical algebra

Homotopy

Homotopy analysis method

Homotopy associative algebra

Homotopy category

Homotopy category of chain complexes

Homotopy colimit

Homotopy excision theorem

Homotopy extension property

Homotopy fiber

Homotopy group

Homotopy group with coefficients

Homotopy groups of spheres

Homotopy hypothesis

Homotopy Lie algebra

Homotopy lifting property

Homotopy principle

Homotopy sphere

Homotopy theory

Homotopy type theory

Honda–Tate theorem

Honest leftmost branch

Honeycomb

Honeycomb (geometry)

Honeycomb conjecture

Hong Kong Mathematical High Achievers Selection Contest

Hong Kong Mathematics Olympiad

Hook length formula

Hooper's paradox

Hoover index

Hopcroft–Karp algorithm

Hopf algebra

Hopf algebra of permutations

Hopf algebroid

Hopf conjecture

Hopf construction

Hopf decomposition

Hopf fibration

Hopf invariant

Hopf lemma

Hopf link

Hopf maximum principle

Hopf–Rinow theorem

Hopf surface

Hopf theorem

Hopfian group

Hopfian object

Hopkins–Levitzki theorem

Horikawa surface

Horizon of predictability

Horizontal coordinate system

Horizontal line test

Horizontal plane

Horizontal translation

Hörmander's condition

Horn logic

Horn-satisfiability

Horner's method

Horocycle

Horologium Oscillatorium

Horopter

Horosphere

Horrocks bundle

Horrocks construction

Horrocks–Mumford bundle

Horsengoggle

Horseshoe lemma

Horseshoe map

Horvitz–Thompson estimator

Hosaka plot

Hoshen–Kopelman algorithm

Hosmer–Lemeshow test

Hosohedron

Hosoya index

Hosoya's triangle

HOSVD-based canonical form of TP functions and qLPV models

Hotch Potch House

Hotelling's lemma

Hotelling's T-squared distribution

Hotelling's t-squared statistic

Hotelling's two-sample T-squared statistic

Hough function

House with two rooms

Householder operator

Householder's method

Houses for Visiting Mathematicians

How Long Is the Coast of Britain? Statistical Self-Similarity and Fractional Dimension

How Not to Be Wrong

How Round Is Your Circle

How to Bake Pi

How to Lie with Statistics

How to Solve It

How to Solve it by Computer

Howson property

Hrushovski construction

Hsiang–Lawson's conjecture

Hsu–Robbins–Erdős theorem

Hu–Washizu principle

Hua's lemma

Hub labels

Hubbard–Stratonovich transformation

Hubbert curve

Huber-White standard errors

Huffman coding

Huge cardinal

Hughes plane

Huisken's monotonicity formula

Human-based genetic algorithm

Humanities Indicators

umbert polynomials

Humbert series

Humbert surface

Hume's principle

Hundred-dollar, Hundred-digit Challenge problems

Hundred Fowls Problem

Hundredth

Hungarian algorithm

Hunt process

Hunt–Szymanski algorithm

Hunter–Saxton equation

Huntington–Hill method

Hurewicz space

Hurewicz theorem

Hurst exponent

Hurwitz equation

Hurwitz transformation

Hutchinson equation

Hutchinson metric

Hutchinson operator

Hybrid automaton

Hybrid bond graph

Hybrid CORDIC

Hybrid logic

Hybrid system

Hybrid topology

Hydrodynamica

Hydrological optimization

Hylomorphism (computer science)

Hyper-Erlang distribution

Hyper-finite field

Hyper-heuristic

Hyper-Wiener index

Hyperarithmetical theory

Hyperbolic cross

Hyperbolic cylinder

Hyperbolic group

Hyperbolic metric

Hyperbolic partial differential equation

Hyperbolic point

Hyperbolic set

Hypercentre

Hypercomplex functions

Hypercontractive semi-group

Hypereffective estimator

Hyper-elliptic curve

Hyper-elliptic integral

Hypergeometric series

Hypergraph

Hyperrelaxation method

Hypertopology

Hypertoric variety

Hypertranscendental function

Hypertranscendental number

Hypertree

Hypoabelian group

Hypoalgebra

Hypocontinuous bilinear map

Hypocycloid

Hypoelliptic operator

Hypoexponential distribution

Hypograph

Hypograph (mathematics)

Hypohamiltonian graph

Hyponormal operator

Hypostatic abstraction

Hypot

Hypothetical syllogism

Hypotrochoid

Hypre

Hypsometric equation

Hysteresivity

Hysteretic model