All articles starting with E
17,681 articles
Elliott Kieff
Elliott Kieff (1943–2024) was an American virologist who established the molecular biology of Epstein–Barr virus and its role in cancer, leading virology at Harvard and Brigham and Women's Hospital.
Elliott M. Antman
Elliott M. Antman is an American cardiologist at Brigham and Women's Hospital and Harvard Medical School whose drug trials reshaped heart-attack treatment; he led the American Heart Association in 2014-15.
Elliott M. Ross
Elliott M. Ross is an American biochemist and pharmacologist who helped discover the first G proteins and spent his faculty career at UT Southwestern Medical Center in Dallas from 1981.
Elliott Management
Elliott Management is an American activist, multi-strategy hedge fund founded by Paul Singer in 1977, managing about $80 billion and known for campaigns at AT&T, BP, and Southwest Airlines.
Elliott S. Fisher
Elliott S. Fisher is an American physician and health services researcher at Dartmouth, known for work on regional Medicare spending differences and accountable care organizations.
Elliott Smith
Elliott Smith (Steven Paul Smith, 1969-2003), American singer-songwriter from Portland, Oregon, formerly of Heatmiser, known for Roman Candle, Either/Or, XO, and the Oscar-nominated "Miss Misery"; died in Los Angeles at 34.
Elliott Smith (album)
Elliott Smith (1995) is the American singer-songwriter's self-titled second solo album, released July 1995 on Kill Rock Stars (KRS246). Recorded DIY on 8-track in friends' Portland homes, ignored by press at release, now a landmark indie-folk record reissued in 2020.
Elliott Taylor
Elliott Taylor is the fictional boy protagonist of Steven Spielberg's 1982 film E.T. the Extra-Terrestrial, created with screenwriter Melissa Mathison and played by Henry Thomas; a lonely middle child of divorce who shares a psychic bond with the alien.
Elliott Vichinsky
Elliott Vichinsky is an American pediatric hematologist and UCSF professor who built Oakland's comprehensive sickle cell program and led phase 3 trials of voxelotor and l-glutamine.
Elliott Waters Montroll
Elliott Waters Montroll (1916–1983) was an American mathematical physicist who introduced the continuous-time random walk in 1965 and applied transfer-matrix methods to the Ising model.
Elliott wave principle
The Elliott wave principle, also known as Elliott Wave Theory, is a financial market theory proposed by Ralph Nelson Elliott in 1938, holding that prices move in repeating five-wave cycles.
Elliott Yamin
Elliott Yamin (エリオット・ヤミン), born 1978 in Los Angeles, is an American R&B singer who finished third on American Idol season 5; his 2007 debut hit No. 3 on Billboard with the platinum single "Wait for You".
Ellipi
Ellipi was an independent kingdom in the central Zagros mountains of western Iran, attested in Neo-Assyrian records from 866 BC until its mid-7th-century BC annexation by the Medes.
Ellipse
An ellipse is a closed plane curve where the sum of the distances to two fixed points, the foci, is constant; it describes planetary orbits.
Ellipsis
Ellipsis: three-dot punctuation mark marking omissions in quotations, pauses, or trailing speech; also called suspension points, encoded as U+2026 HORIZONTAL ELLIPSIS, with style-guide rules on spacing, four-dot forms, and vertical variants.
Ellipsoid
An ellipsoid is a closed quadric surface in three dimensions defined by three semi-axes, the three-dimensional analog of the ellipse, with the sphere as a special case.
Ellipsoid method
The ellipsoid method is an iterative algorithm for convex optimization that shrinks enclosing ellipsoids, used by Khachiyan in 1979 to prove linear programming solvable in polynomial time.
Ellipsometer
An ellipsometer is an optical instrument that measures the change in polarization of light upon specular reflection, used to determine film thicknesses, refractive indices, and other optical properties.
Ellipsometry
Ellipsometry is a nondestructive, contactless optical technique that measures how reflected light's polarization changes, fitting optical models to determine thin-film thickness, refractive index, roughness, and composition.
Elliptic curve
An elliptic curve is a smooth curve of genus one with a group law, given by y² = x³ + ax + b, used in modern cryptography.
Elliptic Curve Digital Signature Algorithm
The Elliptic Curve Digital Signature Algorithm (ECDSA) is a public-key signature algorithm over elliptic curves, specified by NIST in FIPS 186-5 and used in TLS and Bitcoin.
Elliptic flow
Elliptic flow is the second harmonic coefficient (v2) of particle emission in noncentral heavy-ion collisions, the principal signature of fluid-like behavior in the quark-gluon plasma.
Elliptic function
An elliptic function is a meromorphic function of a complex variable that is doubly periodic, with two periods whose ratio is not real; it arose from inverting elliptic integrals.
Elliptic integral
Elliptic integral is a special function, first studied by John Wallis in 1655 regarding the arc length of an ellipse. It is an integral involving cubic or quartic polynomials.
Elliptic orbit
An elliptic orbit, also called an elliptical orbit, is a closed, gravitationally bound path in which one body follows an ellipse around another, as the planets do around the Sun.
Elliptic partial differential equation
An elliptic partial differential equation, or elliptic PDE, is a PDE whose highest-order terms have no real characteristic directions, exemplified by the Laplace and Poisson equations governing steady-state physics.
Elliptic-curve cryptography
Elliptic-curve cryptography (ECC) is a form of public-key cryptography, proposed by Neal Koblitz and Victor Miller in 1985, whose security rests on the elliptic curve discrete logarithm problem and achieves RSA-comparable security with far smaller keys.
Elliptic-curve Diffie–Hellman
Elliptic-curve Diffie–Hellman (ECDH) is a key agreement protocol in which two parties derive a shared secret key over an insecure channel by exchanging points on an elliptic curve.
Elliptical copula
An elliptical copula is the copula of an elliptically contoured distribution, capturing its dependence structure separately from its marginals; examples include the Gaussian and Student t copulas.
Elliptical distribution
An elliptical distribution is a multivariate probability distribution whose density is constant on ellipsoids centered at a location vector, generalizing the multivariate normal distribution and widely applied in statistics, econometrics, and financial risk modeling.