All articles starting with H
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Hamilton Morris
Hamilton Morris (born 1987), American chemist, journalist, and filmmaker, son of Errol Morris; creator and host of Vice's Hamilton's Pharmacopeia (2016–2021), coauthor of the 2014 'From PCP to MXE' dissociative-drug review, COMPASS Pathways consultant, and host of The Hamilton Morris Podcast.
Hamilton O. Smith
Hamilton O. Smith (1931–2025) was an American molecular biologist who shared the 1978 Nobel Prize for discovering restriction enzymes and later helped sequence the first cellular genome.
Hamilton Rating Scale for Depression
Hamilton Rating Scale for Depression (HAM-D, HRSD, HDRS): clinician-administered 21-item depression severity scale by Max Hamilton, 1960, scored on first 17 items; gold standard in trials, remission cutoff ≤7.
Hamilton Robotics
Hamilton Robotics is the laboratory automation business of Hamilton Company, headquartered in Reno, Nevada, selling Microlab liquid handlers, robotic platforms, and automated sample storage systems for life science laboratories.
Hamilton Tiger-Cats
Hamilton Tiger-Cats, CFL East Division team founded 1950 from the Tigers-Flying Wildcats merger, claiming 1869 roots. Eight Grey Cups under the name (last 1999), 15 counting predecessors; play at Hamilton Stadium.
Hamilton Watch Company
Hamilton Watch Company is an American watch manufacturer founded in 1892 in Lancaster, Pennsylvania, known for railroad-grade pocket watches, military chronometers, and the first electric wristwatch.
Hamilton-class cutter
The Hamilton class, also known as the Secretary class, was a group of twelve 378-foot high-endurance cutters built for the United States Coast Guard between 1965 and 1972.
Hamilton–Jacobi equation
The Hamilton–Jacobi equation is a first-order partial differential equation of classical mechanics whose solution, Hamilton's principal function, solves the equations of motion by inversion; it was developed by Hamilton and Jacobi in the 1840s.
Hamilton–Jacobi reachability analysis
Hamilton–Jacobi reachability analysis is a formal verification method that computes, for a dynamical system, the set of states from which it can reach or avoid a target region despite bounded disturbances.
Hamilton–Jacobi–Bellman equation
The Hamilton–Jacobi–Bellman (HJB) equation is a nonlinear partial differential equation whose solution gives the minimum achievable cost in continuous-time optimal control, forming the basis of Bellman's 1957 dynamic programming method.
Hamilton–Reynolds affair
The Hamilton–Reynolds affair (1791–1792) was Alexander Hamilton's adulterous relationship with Maria Reynolds and James Reynolds's blackmail, exposed by James Callender in 1797 and confessed in Hamilton's Reynolds Pamphlet, America's first major political sex scandal.
Hamilton–Rosberg rivalry
The Hamilton–Rosberg rivalry, nicknamed Brocedes, saw Mercedes Formula 1 teammates Lewis Hamilton and Nico Rosberg fight for the world title in 2014, 2015, and 2016.
Hamilton, Bermuda
Hamilton, Bermuda: capital since 1815, founded 1790, incorporated 1793, named for Governor Sir Henry Hamilton. A 177-acre port city, Bermuda's financial and business center, governed by the Corporation of Hamilton under the City of Hamilton Plan 2025.
Hamilton, New Zealand
Hamilton (Kirikiriroa) is New Zealand's fourth-largest and fastest-growing inland city, on the Waikato River 90 minutes south of Auckland; founded on confiscated Maaori land in 1864, known for Hamilton Gardens.
Hamilton, Ontario
Hamilton, Ontario: Canadian port city at the west end of Lake Ontario, fifth-largest Ontario municipality (569,353 in 2021), historic steel center (Stelco, Dofasco), CMA of 785,184, planning 236,000 new residents and a 14-km LRT by mid-century.
Hamilton's equations
Hamilton's equations, also called the canonical equations of motion, are a pair of first-order differential equations describing mechanical motion in terms of coordinates, momenta, and the Hamiltonian.
Hamiltonian (quantum mechanics)
In quantum mechanics, the Hamiltonian, also called the Hamilton operator, is the operator corresponding to a system's total energy, and it determines how the system's state changes in time.
Hamiltonian complexity
Hamiltonian complexity is the field of theoretical computer science and quantum physics studying the complexity of quantum Hamiltonian problems, above all the local Hamiltonian problem.
Hamiltonian constraint of loop quantum gravity
The Hamiltonian constraint of loop quantum gravity is the quantum operator encoding general relativity's local dynamics, first given a rigorous form by Thomas Thiemann, though ambiguities remain.
Hamiltonian cycle
A Hamiltonian cycle is a closed path in a graph that visits every vertex exactly once and returns to its start; it was posed as Hamilton's Icosian Game in 1857.
Hamiltonian interpolation and the adiabatic spectral gap
In adiabatic quantum computation, the interpolation from an easy initial Hamiltonian to a final one whose ground state encodes the answer, with the minimum spectral gap governing runtime.
Hamiltonian learning
Hamiltonian learning is a set of methods in quantum information science that infer the parameters, and sometimes the structure, of an unknown quantum Hamiltonian from measurement data.
Hamiltonian mechanics
Hamiltonian mechanics, also known as Hamiltonian dynamics, is a reformulation of classical mechanics introduced by William Rowan Hamilton in 1834 and 1835, describing motion by Hamilton's equations.
Hamiltonian Monte Carlo
Hamiltonian Monte Carlo, originally called Hybrid Monte Carlo, is a Markov chain Monte Carlo method introduced in 1987 that uses Hamiltonian dynamics for efficient sampling, later generalized by Radford Neal.
Hamiltonian neural networks
Hamiltonian neural networks, introduced at NeurIPS 2019 by Sam Greydanus, Misko Dzamba, and Jason Yosinski, learn a system's energy function from data so the learned dynamics conserve energy.
Hamiltonian path
A Hamiltonian path, also called a Hamilton path, is a path in a graph that visits each vertex exactly once. The problem of finding one is NP-complete.
Hamiltonian path problem
The Hamiltonian path problem asks whether a graph contains a simple path visiting every vertex exactly once, a classical NP-complete problem in Karp's 1972 list.
Hamiltonian simulation
Hamiltonian simulation is the quantum-computing task of implementing a Hamiltonian's time evolution as a quantum circuit of elementary gates, motivating quantum computers when Richard Feynman proposed the idea in 1982.
Hamiltonian truncation
Hamiltonian truncation is a non-perturbative numerical method for quantum field theories that restricts the Hamiltonian to a finite subspace of states below an energy cutoff, generalizing Rayleigh-Ritz to field theory.
Hamiltosporidium
Hamiltosporidium is a genus of microsporidia, obligate intracellular single-celled parasites, proposed in 2010 and 2011, whose two described species, H. tvaerminnensis and H. magnivora, infect Daphnia magna.