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Abbreviation at completion of a proof
Q.E.D. (also written as QED) is an initialism of the Latin phrase quod erat demonstrandum, meaning "that which was to be demonstrated". Literally, it
Q.E.D.
Topics referred to by the same term
Look up QED or qed in Wiktionary, the free dictionary. QED may refer to: Q.E.D. (quod erat demonstrandum), used at the end of a mathematical proof Quantum
QED
Quantum field theory of electromagnetism
In particle physics, quantum electrodynamics (QED) is the relativistic quantum field theory of electrodynamics. In essence, it describes how light and
Quantum_electrodynamics
Verifying quantum electrodynamics by measuring the fine-structure constant
Quantum electrodynamics (QED), a relativistic quantum field theory of electrodynamics, is among the most stringently tested theories in physics. The most
Precision_tests_of_QED
Proposal for a computer-based database of all mathematical knowledge
The QED manifesto was a proposal for a computer-based database of all mathematical knowledge, strictly formalized and with all proofs having been checked
QED_manifesto
Written and illustrated by Motohiro Katou, Q.E.D. started in Kodansha's shōnen manga magazine Magazine Great's July 1997 issue. Magazine Great was rebranded
List_of_Q.E.D._chapters
Lowest energy state in quantum electrodynamics
The QED vacuum or quantum electrodynamic vacuum is the field-theoretic vacuum of quantum electrodynamics. It is the lowest energy state (i.e., the ground
QED_vacuum
Line-oriented text editor for the SDS 940
QED (short for quick editor) is a line-oriented text editor that was developed by Butler Lampson and L. Peter Deutsch for the Berkeley Timesharing System
QED_(text_editor)
Book by Richard Feynman
QED: The Strange Theory of Light and Matter is an adaptation for the general reader of four lectures on quantum electrodynamics (QED) published in 1985
QED: The Strange Theory of Light and Matter
QED:_The_Strange_Theory_of_Light_and_Matter
Ancient Egyptian minor gate deity
Qed-her was an ancient Egyptian minor warrior and gate goddess of the underworld. Qed-her was portrayed as a woman with the head of a lioness with two
Qed-her
American film production studio, financer and international distributor
QED International is an American independent film production studio, financier and international distributor based in Los Angeles. It is best known for
QED_International
British businessman (born 1958)
(born June 1958) is a British businessman. He is the managing partner of QED Investors and co-founded Capital One Financial Services with Richard Fairbank
Nigel_Morris
Annual conference in Manchester, England
QED: Question, Explore, Discover (also called QEDcon or simply QED) was an annual skeptical conference held in Manchester, England from 2011 until 2025
QED_(conference)
American theoretical physicist (1918–1988)
Shin'ichirō Tomonaga "for their fundamental work in quantum electrodynamics (QED), with deep-ploughing consequences for the physics of elementary particles"
Richard_Feynman
Quantum state with the lowest possible energy
quantum field. The QED vacuum of quantum electrodynamics (or QED) was the first vacuum of quantum field theory to be developed. QED originated in the 1930s
Quantum_vacuum_state
Japanese manga series
Q.E.D. (Japanese: Q.E.D. 証明終了, Hepburn: Kyūīdī Shōmei Shūryō) is a Japanese manga series written and illustrated by Motohiro Katou. It was serialized
Q.E.D._(manga)
Play written by Peter Parnell
QED is a play by American playwright Peter Parnell that chronicles significant events in the life of Nobel Prize-winning physicist Richard Feynman. It
QED_(play)
Mu-Qed was an ancient maritime trade route along the littoral of the Red Sea's northeast African coast. The term Mu-Qed had been in use since the Eighteenth
Mu-qed
Theoretical framework in physics
of QED, leading to non-Abelian gauge theories (also known as Yang–Mills theories), which are based on more complicated local symmetry groups. In QED, (electrically)
Quantum_field_theory
Strand of science documentary films
Q.E.D. (quod erat demonstrandum, Latin for "that which was to be demonstrated") was the name of a series of BBC popular science documentary films which
Q.E.D._(British_TV_series)
2009 British documentary film
a QED documentary made by the BBC in 2009. The film follows John Davidson, who has Tourette syndrome, and the changes in his life since the 1989 QED documentary
Tourettes: I Swear I Can't Help It
Tourettes:_I_Swear_I_Can't_Help_It
Dimensionless number that quantifies the strength of the electromagnetic interaction
appear in any of its definitions, the theory of quantum electrodynamics (QED) provides a way to measure α directly using the quantum Hall effect or the
Fine-structure_constant
1989 British television documentary
Mad is a British television documentary made as an episode of the BBC's Q.E.D. series in 1989. In 2005, it was ranked, in a British public poll, as one
John's_Not_Mad
Line-oriented text editor
came from the qed text editor developed at Thompson's alma mater University of California, Berkeley. Thompson was very familiar with qed, and had reimplemented
Ed_(text_editor)
Coffee roasting company in Seattle, Washington
QED Coffee is a small-batch specialty coffee roaster based in Seattle, Washington. QED Coffee is a coffee roast based in Seattle, Washington. The business
QED_Coffee
Japanese physicist (1906-1979)
Julian Schwinger "for their fundamental work in quantum electrodynamics (QED), with deep-ploughing consequences for the physics of elementary particles"
Shin'ichirō_Tomonaga
Indian political party
Religious Unity Party; abbreviated QED) was a regional party in Uttar Pradesh, India, founded in 2010. The QED's president was Afzal Ansari and was affiliated
Quami_Ekta_Dal
Coupling constant divergence at high energies
theories that are not asymptotically free, such as quantum electrodynamics (QED) or φ4 theory—a scalar field with a quartic interaction—such as ones that
Landau_pole
Microprocessor design company
Quantum Effect Devices, Inc. (QED), was a microprocessor design company incorporated in 1991 as Quantum Effect Design. It was based in Palo Alto, California
Quantum_Effect_Devices
64-bit microprocessor developed in 1996
IV instruction set architecture (ISA) developed by Quantum Effect Design (QED) in 1996. The project was funded by MIPS Technologies, Inc (MTI), also the
R5000
Australian band
QED were an Australian new wave band who had a top twenty hit single, "Everywhere I Go", on the Australian Kent Music Report in 1984. The band's lead
QED_(band)
Quantum physics of light and matter in a cavity
Cavity Quantum Electrodynamics (cavity QED) is the study of the interaction between light confined in a reflective cavity and atoms or other particles
Cavity quantum electrodynamics
Cavity_quantum_electrodynamics
Energy scale at which vacuum effects become important
In quantum electrodynamics (QED), the Schwinger limit is a scale above which the electromagnetic field is expected to become nonlinear. The limit was
Schwinger_limit
American actress (born 1969)
production of David Mamet's Oleanna, and supporting roles in Peter Parnell's QED (opposite Alan Alda), and the musical The Education Of Randy Newman, in which
Allison_Smith_(actress)
1982 American TV series or program
Q.E.D. is a 1982 adventure television series set in Edwardian England, starring Sam Waterston as Professor Quentin Everett Deverill. The Professor was
Q.E.D._(American_TV_series)
Method in physics used to deal with infinities
scales. Renormalization was first developed in quantum electrodynamics (QED) to make sense of infinite integrals in perturbation theory. Initially viewed
Renormalization
Symbol used in mathematics and typography
end-of-proof, or Q.E.D. symbol "∎" (or "□") is a symbol used to denote the end of a proof, in place of the traditional abbreviation "Q.E.D." for the Latin
Tombstone_(typography)
Means of studying the interaction of light and matter
Circuit quantum electrodynamics (circuit QED) provides a means of studying the fundamental interaction between light and matter (quantum optics). As in
Circuit quantum electrodynamics
Circuit_quantum_electrodynamics
Expansion of the time evolution operator
diagrams. This series diverges asymptotically, but in quantum electrodynamics (QED) at the second order the difference from experimental data is in the order
Dyson_series
System of rapid mental calculation
+10^{0}*c_{1})\Leftrightarrow \\R&=10^{n-1}*2*c_{n}+\ldots +10^{0}*2*c_{1}\\\\&QED\end{aligned}}} Rule: Multiply each digit by 2 (with carrying). Example: 8624
Trachtenberg_system
Non-profit public broadcasting organization
WQED Multimedia is an American nonprofit corporation based in Pittsburgh, Pennsylvania that owns and operates three public broadcasting stations: Television
WQED_Multimedia
Postulate in particle physics
number Identical particles Retrocausality T-symmetry Silvan S. Schweber, QED and the Men Who Made It, p. 388, Princeton University Press, 1994, ISBN 0691033277
One-electron_universe
Value in quantum electrodynamics
}^{\mathrm {QED} }+a_{\mu }^{\mathrm {EW} }+a_{\mu }^{\mathrm {hadron} }.} Of the first two components, a μ Q E D {\displaystyle a_{\mu }^{\mathrm {QED} }} represents
Anomalous magnetic dipole moment
Anomalous_magnetic_dipole_moment
Hypothetical subatomic particle
framework of quantum electrodynamics (QED). Proponents of this theory suggest that unknown dynamics in the QED sector could allow a light quark and antiquark
X17_particle
Sequence of characters that forms a search pattern
program form was when Ken Thompson built Kleene's notation into the editor QED as a means to match patterns in text files. For speed, Thompson implemented
Regular_expression
Illustrated book publishing group
Book with Facts: The Colours of History, by Clive Gifford, published by QED Publishing. British Book Awards 2018, Rights Professional of the Year: Karine
The_Quarto_Group
American theoretical physicist (1918–1994)
Shin'ichirō Tomonaga "for their fundamental work in quantum electrodynamics (QED), with deep-ploughing consequences for the physics of elementary particles"
Julian_Schwinger
Speed of electromagnetic waves in vacuum
electrodynamics (QED). In this theory, light is described by the fundamental excitations (or quanta) of the electromagnetic field, called photons. In QED, photons
Speed_of_light
American physicist
was an American theoretical physicist, known for his pioneering work in QED. Kroll received in 1942 his bachelor's degree from Columbia University after
Norman_Myles_Kroll
American musician and actor
(2021-01-24). "Meet Oyibo Rebel, Trump's daughter's future brother-in-law". QED.NG. Retrieved 2024-12-01. "Oyibo Rebel: Naija babes have a place in my heart"
Oyibo_Rebel
Japanese manga artist
Katō Motohiro) is a Japanese manga artist, best known for creating the Q.E.D. series. He made his debut on game-related works for Enix. Presently he
Motohiro_Katou
Irish psychiatrist (1942–2007)
He was also for many years the voice of the BBC popular science programme QED. Clare became famous for his probing interviews on radio and television with
Anthony_Clare
Fundamental interaction between charged particles
1905. Quantum electrodynamics (QED) modifies Maxwell's equations to be consistent with the quantized nature of matter. In QED, changes in the electromagnetic
Electromagnetism
series-hybrid car at the British Motor Show in London, using a Mini dubbed the "Mini QED" with its in-wheel motor at all four wheels. Two other car manufacturers
Hi-Pa_Drive
Identity in abelian theories due to gauge invariance
renormalization. The Ward–Takahashi identity of quantum electrodynamics (QED) was originally used by John Clive Ward and Yasushi Takahashi to relate the
Ward–Takahashi_identity
2009 studio album by Acid Black Cherry
Q.E.D. is the second studio album by Acid Black Cherry, the solo project of singer Yasu (formerly of Janne Da Arc). It was released on August 26, 2009
Q.E.D. (Acid Black Cherry album)
Q.E.D._(Acid_Black_Cherry_album)
Parameter describing the strength of a force
feel such a force, and has its value fixed by experiment. By looking at the QED Lagrangian, one sees that indeed, the coupling sets the proportionality between
Coupling_constant
Neglecting the fermion determinant in lattice calculations
computationally very difficult in lattice gauge theory. In particular, quenched QED is QED without dynamical electrons, and quenched QCD is QCD without dynamical
Quenched_approximation
1930s sportplane series
The Granville Gee Bee R-6 International Super Sportster, named "Q.E.D." (Latin: quod erat demonstrandum "it is proven"), and later named "Conquistador
Granville_Gee_Bee_R-6
American film producer (born 1954)
Block founded film finance, production and sales company QED International. He was CEO of QED for 12 years, producing films including Neill Blomkamp's
Bill_Block
2015 American film by Jason Bateman
Bateman will direct and star alongside Kidman as her brother in the film, and QED International would finance the film. On May 5, 2014, Christopher Walken
The_Family_Fang_(film)
Property of computational resources needed
Entanglement-assisted Physical implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion
Magic_(quantum_information)
American theoretical physicist
developing a renormalization method for solving quantum electrodynamics (QED). Dancoff was raised in the Squirrel Hill neighborhood of Pittsburgh. He
Sidney_Dancoff
Ancient Egyptian solar deity
Panebtawy Perit Petbe Peteese Pihor Ptah Ptah-Patek Q Qebehsenuef Qebui Qed-her Qetesh R Ra Raet-Tawy Rekhyt Rem Renenutet Renpet Renpetneferet Repyt
Ra
Theorem in physics
Entanglement-assisted Physical implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion
Bell's_theorem
Quantum algorithm for integer factorization
Entanglement-assisted Physical implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion
Shor's_algorithm
Nigerian fintech company
Ventures. It also fundraised the $50 million in pre-series C funding led by QED investors. In March 2023, Moniepoint led the $3 million seed investment round
Moniepoint_Inc.
Lowest possible energy of a quantum system or field
can be used when referring to a specific vacuum field, for instance the QED vacuum which specifically deals with quantum electrodynamics (e.g., electromagnetic
Zero-point_energy
Indian politician
Published 28 February 2017, Retrieved 24 August 2017 "Sibgatullah Ansari (QED), Constituency:Mohammadabad". Myneta.info. 3 October 2022. "Sibgatullah Ansari
Sibgatullah_Ansari
American atheist activist (born 1969)
Mancunian Way", Butterflies and Wheels "Panel: Daring to Disagree, A session at QED 2015", Lanyrd, archived from the original on October 1, 2015, retrieved April
Matt_Dillahunty
American actor (1907–1979)
invade US sitcoms with the sometimes-witty, early 1900s adventure series 'Q.E.D.'". Christian Science Monitor. Archived from the original on December 31
John_Wayne
Networks connecting quantum processors
Also, cavity quantum electrodynamics (Cavity QED) is one possible method of doing this. In Cavity QED, photonic quantum states can be transferred to
Quantum_network
Major meeting of American physicists led by Robert Oppenheimer in 1947
incomplete, the small difference was an indication that quantum electrodynamics (QED) was progressing. Another dramatic discovery was reported at the conference
Shelter_Island_Conference
Organisation promoting scientific scepticism
regular events in Liverpool, podcasts, and an annual conference in Manchester, QED: Question. Explore. Discover. As part of their Liverpool Skeptics in the
Merseyside_Skeptics_Society
Concept in theoretical physics
physical processes occur varies. For example, in quantum electrodynamics (QED), an electron appears to be composed of electron and positron pairs and photons
Renormalization_group
Quantum error correcting code
Entanglement-assisted Physical implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion
Gottesman–Kitaev–Preskill code
Gottesman–Kitaev–Preskill_code
American filmmaker (born 1942)
2016. Retrieved September 1, 2013. Fleming, Mike Jr. (September 3, 2013). "QED Sets Bill Murray For Barry Levinson-Directed 'Rock The Kasbah'". Deadline
Barry_Levinson
American physicist (born 1950)
electrodynamics (circuit QED), the application of the ideas of quantum optics to superconducting microwave circuits. Circuit QED is now the leading architecture
Steven_Girvin
Semitic title often used in reference to deities
Panebtawy Perit Petbe Peteese Pihor Ptah Ptah-Patek Q Qebehsenuef Qebui Qed-her Qetesh R Ra Raet-Tawy Rekhyt Rem Renenutet Renpet Renpetneferet Repyt
Baal
Variation of classical electrodynamics
of the electromagnetic zero-point field (ZPF) of quantum electrodynamics (QED). Stochastic electrodynamics combines two conventional classical ideas –
Stochastic_electrodynamics
Australian musician
a band member of various groups including Air Supply (1977, 1981–1983), QED (1983–1985), and Eurogliders (1988–1989, 2005). Goh has also toured and recorded
Rex_Goh
Proof assistant
is_even 0 = true. Proof. reflexivity. Qed. Lemma is_even_S n : is_even (S n) = negb (is_even n). Proof. reflexivity. Qed. Lemma successor_flips_evenness n
Rocq
Nigerian actress and film director (died 2026)
Kechere biography, net worth, age, family, contact & picture". "Aki na Ukwa actress Oby Kechere is dead". QED. 1 May 2026. Retrieved 1 May 2026. v t e
Oby_Kechere
Series of three monumental statues
Panebtawy Perit Petbe Peteese Pihor Ptah Ptah-Patek Q Qebehsenuef Qebui Qed-her Qetesh R Ra Raet-Tawy Rekhyt Rem Renenutet Renpet Renpetneferet Repyt
Koptos_colossi
Method used in mathematical physics
the case of quantum electrodynamics (QED) in the four-dimensional Minkowski spacetime, starting with the original QED Lagrangian density. The path-integral
Regularization_(physics)
Indian politician (1963–2024)
Quami Ekta Dal (QED), in 2010. Earlier, Mukhtar had launched an outfit called the Hindu Muslim Ekta Party, which was merged with QED. In 2012, he was
Mukhtar_Ansari
British geneticist, author, and broadcaster
such as Skeptics in the Pub. In 2013, he was an invited speaker at the QED conference in Manchester, and at the 2013 North East Postgraduate Conference
Adam_Rutherford
Elementary particle that mediates the strong force
charge, QCD is more difficult to analyze compared to quantum electrodynamics (QED) where the photon carries no electric charge. The term was coined by Murray
Gluon
Renormalization scheme in quantum field theory
the strength of the interaction is measured by a parameter, in the case of QED it is the bare electron charge, e {\displaystyle e} . The general form of
On-shell renormalization scheme
On-shell_renormalization_scheme
Electron-electron scattering
the process is instead described by four tree-level diagrams: the two from QED and an identical pair in which a Z boson is exchanged instead of a photon
Møller_scattering
Computer hardware technology that uses quantum mechanics
Entanglement-assisted Physical implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion
Quantum_computing
Basic unit of quantum information
Entanglement-assisted Physical implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion
Qubit
Low energy limit of quantum electrodynamics
calculations in atomic and molecular physics, for example for computing QED corrections to bound energy levels of atoms and molecules. Caswell, W.E.;
Non-relativistic quantum electrodynamics
Non-relativistic_quantum_electrodynamics
Quantum computing algorithm
Entanglement-assisted Physical implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion
Magic_state_distillation
Definition of quantum circuits
Entanglement-assisted Physical implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion
Clifford_gate
Cryptography secured against quantum computers
Entanglement-assisted Physical implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion
Post-quantum_cryptography
Quantum mechanics idea
Entanglement-assisted Physical implementations Quantum optics Cavity QED Circuit QED Linear optical QC KLM protocol Ultracold atoms Neutral atom QC Trapped-ion
Entanglement_swapping
Particle effect
positive- and negative-energy wave components. In quantum electrodynamics (QED) the negative-energy states are replaced by positron states, and the Zitterbewegung
Zitterbewegung
Nigerian football club
30, 2015). "Meet the four teams promoted to the Nigeria Premier League". qed.ng. "Akwa Utd Defeats Tornadoes to Win Maiden Aiteo Cup". This Day. "LMC
Niger_Tornadoes_F.C.
Higher-order logic (HOL) automated theorem prover
simp qed with ‹2 dvd m› have "2 dvd gcd m n" by (rule gcd_greatest) with lowest_terms have "2 dvd 1" by simp thus False using odd_one by blast qed Isabelle
Isabelle_(proof_assistant)
QED
QED
QED
QED
Girl/Female
Arabic, Indian, Tamil
Righteous Woman; High; Exalted
Male
Hebrew
Variant spelling of Hebrew Yakiyn, YACHIN means "he establishes" or "whom God strengthens."Â
Girl/Female
Muslim/Islamic
Joy
Girl/Female
Australian, Danish, German, Swedish
He will Increase
Girl/Female
Indian, Sanskrit
Aura
Girl/Female
Indian
Helper, Supporter, Protector, Blossoming flower, Brilliant, Visible, Dawn
Boy/Male
Sikh
Brave as the Lord Sun
Girl/Female
Assamese, Bengali, Indian, Kannada
Hindu Goddess Name; Words
Girl/Female
Hebrew American English Shakespearean
Gift from God.
Boy/Male
Tamil
Tiny
QED
QED
QED
QED
QED