42,772 articles
Gyula O. H. Katona
Gyula O. H. Katona, born 1941 in Budapest, is a Hungarian mathematician at the Rényi Institute known for extremal set theory, the Kruskal–Katona theorem, and the Katona circle method.
Gyula Pál
Gyula Pál, publishing as Julius Pál, was a Hungarian-born, later Danish mathematician in topology and convex geometry, best known for solving the convex Kakeya needle problem.
H II region
An H II region is a cloud of ionized hydrogen in interstellar space, ionized by ultraviolet light from hot young massive stars, marked by strong Hα emission.
h-cobordism theorem
The h-cobordism theorem, proved by Stephen Smale around 1961, states that a simply connected h-cobordism of dimension at least 5 is diffeomorphic to a product.
H-dibaryon
The H-dibaryon is a hypothetical six-quark particle, a bound state of two Λ hyperons predicted by Robert Jaffe in 1977, never observed despite decades of searches and lattice QCD studies suggesting it is unbound.
H-mode
H-mode, the high-confinement mode of magnetically confined fusion plasmas, forms an edge transport barrier that doubles energy confinement; discovered on ASDEX in 1982, it is ITER's baseline operating regime.
H-space
An H-space is a pointed topological space with a continuous multiplication whose base point acts as a unit up to homotopy, named after Heinz Hopf and studied since his 1941 work.
H-theorem
The H-theorem, or Boltzmann H-theorem, is an 1872 result of kinetic theory showing that a dilute gas's H quantity, like negative entropy, decreases toward equilibrium.
H-vector
An h-vector is a sequence of integers encoding the number of faces of a simplicial complex, polytope, or poset in each dimension; it determines, and is determined by, the f-vector.
H. Bernhard Schlegel
H. Bernhard Schlegel is a theoretical chemist at Wayne State University in Detroit, known for reaction path following algorithms, the Berny geometry optimizer, and his role in developing Gaussian.
H. Blaine Lawson
H. Blaine Lawson, born 1942, is an American differential geometer and Distinguished Professor at Stony Brook University, known for calibrated geometry and for embedding minimal surfaces in the 3-sphere.
H. C. Verma (हरिश चंद्र वर्मा)
H. C. Verma, also known as Harish Chandra Verma, is an Indian experimental physicist and IIT Kanpur professor best known for the two-volume textbook Concepts of Physics.
H. Christopher Longuet-Higgins
Hugh Christopher Longuet-Higgins (1923–2004) was a British theoretical chemist who, in mid-career, became a founding figure of cognitive science, co-founding machine intelligence research at Edinburgh and coining the term "cognitive science" in 1973.
H. Damon Matthews
H. Damon Matthews is a Canadian climate scientist and professor at Concordia University in Montreal, known for research showing global warming rises in near-linear proportion to cumulative carbon emissions.
H. David Politzer
H. David Politzer, born 1949, is an American theoretical physicist at Caltech who shared the 2004 Nobel Prize in Physics for the discovery of asymptotic freedom.
H. Donald Ratliff
H. Donald Ratliff is an American industrial engineer and operations researcher, Regent's Professor Emeritus at Georgia Tech, elected to the National Academy of Engineering in 1996 for logistics optimization.
H. E. Carter
H. E. Carter, or Herbert Edmund Carter, was an American biochemist who pioneered sphingolipid research at the University of Illinois and was elected to the National Academy of Sciences in 1953.
H. E. Wright
Herbert E. Wright Jr. (1917–2015) was an American Quaternary scientist at the University of Minnesota, elected to the National Academy of Sciences in 1977 and known for the COHMAP project.
H. Eugene Stanley
H. Eugene Stanley, born 1941 in Oklahoma City, is an American physicist at Boston University known for critical phenomena, the physics of water, and founding econophysics.
H. F. Baker
H. F. Baker, or Henry Frederick Baker (1866–1956), was a British mathematician at Cambridge known for the Baker–Campbell–Hausdorff formula and for founding the Cambridge school of geometry between the wars.
H. J. W. de Baar
H. J. W. de Baar, also known as Hein J.W. de Baar, is a Dutch chemical oceanographer known for rare-earth measurements in seawater and iron limitation of the Southern Ocean.
H. Jay Melosh
H. Jay Melosh (1947–2020) was an American planetary scientist known for impact cratering physics and acoustic fluidization, a Purdue professor and author of the 1989 monograph Impact Cratering.
H. Jay Zwally
H. Jay Zwally is an American glaciologist at NASA Goddard who pioneered satellite altimetry of the Greenland and Antarctic ice sheets and served as ICESat Project Scientist.
H. Jeff Kimble
H. Jeff Kimble, full name Harry Jeffrey Kimble (1949–2024), was an American experimental physicist at Caltech who pioneered cavity quantum electrodynamics and helped found quantum information science.
H. William Menard Jr.
H. William Menard Jr. (Henry William Menard Jr., 1920–1986) was an American marine geologist at Scripps Institution of Oceanography whose Pacific seafloor mapping underpinned plate tectonics.
H.E.S.S.
H.E.S.S., the High Energy Stereoscopic System, is an array of five imaging atmospheric Cherenkov telescopes in Namibia that detects very-high-energy gamma rays from cosmic sources.
H.E.S.S. Galactic Plane Survey
The H.E.S.S. Galactic Plane Survey (HGPS) is a survey of the Milky Way in very high-energy gamma rays, observed with telescopes in Namibia from 2004 to 2013 and published in 2018.
H.W. Nesbitt
H.W. Nesbitt, or H. Wayne Nesbitt, is a Canadian geochemist and Royal Society of Canada fellow at Western University known for work on continental weathering and rare earth elements.
H0LiCOW
H0LiCOW (H0 Lenses in COSMOGRAIL's Wellspring) is an international collaboration measuring the Hubble constant from lensed quasars, finding a value in tension with Planck CMB predictions.
H1743-322
H1743-322, also cataloged as IGR J17464-3213, is a black hole X-ray binary and microquasar near the Galactic Center, discovered in 1977 and erupting in outbursts roughly every few years.