All articles starting with H
20,046 articles
Homosexuality in ancient Rome
Homosexuality in ancient Rome: same-sex desire and behavior in Roman society, organized not by a homo/heterosexual divide but by active/passive penetrative roles and partner status, with legal attitudes shifting from tolerance to criminalization in late antiquity.
Homosexuality in association football
Homosexuality in association football: LGBTQ+ players, fans, and inclusion in soccer. Few openly gay male professionals (Fashanu 1990, Daniels 2022), a more open women's game, fan attitude-behavior gaps, and campaigns like Rainbow Laces.
Homosexuality in China
Homosexuality in mainland China: same-sex conduct legal since 1997, removed from mental disorder lists in 2001, but no same-sex marriage, adoption, or anti-discrimination protections under the Civil Code.
Homosexuality in English football
Homosexuality in English football: gay players, fans, and homophobia in the English game. Justin Fashanu came out in 1990, Jake Daniels in 2022; Rainbow Laces, Kick It Out, and FA inclusion campaigns address discrimination.
Homosexuality in India
Homosexuality in India: legal and social status of sexual minorities. Section 377 (IPC 1860, colonial) criminalized gay sex until the Supreme Court's unanimous 2018 Navtej Johar ruling; same-sex marriage was refused by the Court in 2023, left to Parliament.
Homosexuality in Japan
Homosexuality in Japan: same-sex desire from Heian and Tokugawa nanshoku/shudō traditions, the brief 1873–1882 keikan sodomy law, and today's marriage-equality litigation, with no national same-sex marriage or comprehensive anti-discrimination law.
Homosexuality in the Batman franchise
Homosexuality in the Batman franchise: Wertham's 1954 Seduction of the Innocent gay reading of Batman and Robin, Comics Code censorship, camp 1960s TV and Schumacher films, and modern queer characters Kate Kane, Catwoman, and Robin.
Homosexuality in the militaries of ancient Greece
Homosexuality in the militaries of ancient Greece: same-sex bonds as military organization, chiefly pederasty (erastes/eromenos) in Crete, Sparta, Elis, and Thebes, culminating in the Sacred Band of Thebes, 150 male couples, victors of Leuctra 371 BCE, destroyed at Chaeronea 338 BCE.
Homosexuality in the New Testament
Homosexuality in the New Testament, also discussed as LGBT and the New Testament, concerns the few passages cited in debates over same-sex relationships and their contested translation.
Homosynaptic plasticity
Homosynaptic plasticity: activity-dependent change (LTP or LTD) at synapses that were themselves active during induction, Hebbian, input-specific, NMDA receptor and calcium dependent, distinct from heterosynaptic plasticity at unstimulated synapses.
Homotherium
Homotherium, the scimitar-toothed cat (H. latidens, H. serum), an extinct Holarctic machairodont felid with short serrated canines and long limbs, a cursorial hunter of juvenile mammoths that survived until the terminal Pleistocene.
Homothety
A homothety, also called a central dilatation, is a geometric transformation with a center O that sends each point M to a point on line OM at a scaled distance.
Homotopy
Homotopy is a continuous deformation of one map between topological spaces into another, introduced by Henri Poincaré in 1895 as a central idea of algebraic topology.
Homotopy analysis method
The homotopy analysis method, developed by Shi-Jun Liao of Shanghai Jiaotong University in 1992, is a semi-analytical technique giving convergent series solutions of strongly nonlinear differential equations.
Homotopy category
The homotopy category Ho(C) of a category with weak equivalences is obtained by universally forcing them to become isomorphisms, turning homotopy theory into equivalence classes of morphisms.
Homotopy class trajectory planning
Homotopy class trajectory planning is the family of robot motion planning methods that distinguishes trajectories by how they avoid obstacles and optimizes within a specified topological class.
Homotopy continuation for kinematics
Homotopy continuation for kinematics is the application of numerical polynomial continuation to the polynomial equations of linkages and robot manipulators, finding all solutions without needing initial guesses.
Homotopy equivalence
A homotopy equivalence is a continuous map between topological spaces with a homotopy inverse; homotopy equivalent spaces share invariants like the fundamental group and homology.
Homotopy group
A homotopy group is an algebraic invariant assigning to a space a group of homotopy classes of maps from the n-sphere, introduced by Witold Hurewicz in 1935–36.
Homotopy method
A homotopy method, also called a continuation method, solves a system of equations by deforming an easy problem with known solutions into the target problem and tracking the solution paths.
Homotopy perturbation method
The homotopy perturbation method (HPM) is an analytical technique introduced by Ji-Huan He in 1999 that solves nonlinear differential equations without needing a small parameter.
Homotopy type theory
Homotopy type theory, also known as homotopical type theory or HoTT, combines Martin-Löf type theory with homotopy theory, with Voevodsky's univalence axiom and higher inductive types at its core.
Homovanillic acid
Homovanillic acid (HVA), also called 4-hydroxy-3-methoxyphenylacetic acid, is the principal end-stage metabolite of dopamine in humans, excreted in urine and used to diagnose tumors such as neuroblastoma.
Homowo Regio
Homowo Regio is a 360-km-wide IAU-named region on dwarf planet Ceres, approved in 2020, named for the Ga people's Ghanaian harvest festival, located in Occator crater's northeastern ejecta.
Homozygote
Homozygote: an individual with two identical alleles at a gene locus, one from each parent; contrasted with heterozygote. Central to recessive disease expression, Bateson's 1902 terminology, and runs of homozygosity used to measure inbreeding.
Homozygous familial hypercholesterolemia
Homozygous familial hypercholesterolemia (HoFH), also called bi-allelic FH, is a rare autosomal semi-dominant disorder with LDL-C above 10 mmol/L from birth, caused mainly by LDLR variants, and treated with statins, ezetimibe, PCSK9 inhibitors, evinacumab, lomitapide, and apheresis.
Homs (حمص)
Homs (حمص), Emesa in antiquity, is Syria's third-largest city on the Orontes at the Homs Gap, home to the country's largest oil refinery; dubbed 'capital of the revolution' in 2011, devastated by the 2011–2014 siege, and a main return destination after Assad's fall in December 2024.
Homunculus
A homunculus (Latin for "little human") is an artificially made miniature human described in Renaissance alchemy, above all in Paracelsus's 1537 recipe in De natura rerum.
Homunculus (ホムンクルス) (manga)
Homunculus (ホムンクルス) is a 2003–2011 psychological horror manga by Hideo Yamamoto, serialized in Weekly Big Comic Spirits and collected in 15 volumes; a car-dwelling ex-banker sees people's traumas as homunculi after trepanation, adapted into a 2021 Netflix film and released in English by Seven Seas.
Homunculus argument
Homunculus argument (homunculus fallacy): objection in philosophy of mind that explaining a mental capacity by an inner "little man" who already has it yields an infinite regress; named by Anthony Kenny (1971), rooted in Ryle's 1949 regress, central to Dennett's Cartesian theater critique.