All articles starting with L
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Lei Xue
Lei Xue is the name of two Chinese athletes: a visually impaired sprinter who won the men's 100 m T11 gold at the 2012 Paralympics, and a female swimmer of the 1990s.
Lei Youzhong
Lei Youzhong (雷有终, 947–1005, courtesy name Daocheng) was a Song dynasty official and military commander who served three emperors and suppressed Wang Jun's mutiny at Yizhou.
Lei Zhengwan
Lei Zhengwan (雷正绾), courtesy name Weitang, was a Qing military commander from Zhongjiang, Sichuan, who rose to Provincial Military Commander of Shaanxi during the Muslim and Taiping rebellions.
Lei Zhu
Lei Zhu is a polymer scientist and professor at Case Western Reserve University known for high-dielectric-constant and ferroelectric polymers, including fluorine-free ferroelectric polymers reported in Science in 2025.
Lei-Kung Fluctus
Lei-Kung Fluctus is a vast lava flow field on Io, the largest on the moon. It was named for the Chinese thunder god Lei-Kung (雷公) and approved in 1997.
Lei-zi Fluctus
Lei-zi Fluctus is a 361 km lava flow field on Jupiter's volcanic moon Io, named in 2000 after the Chinese goddess of thunder, with Juno observations showing volcanic activity there.
Leib Guard
The Leib Guard (Лейб-гвардия) was the elite guard corps of the Russian monarchy, established by Peter I in 1700 and permanently quartered in St Petersburg.
Leibnitz (lunar crater)
Leibnitz is a 237-km impact crater on the lunar far side within the South Pole-Aitken basin, named for Gottfried Wilhelm Leibniz, approved 1970; it shares its southern rim with Von Karman crater and gives its name to the Leibnitz Mountains.
Leibniz formula for determinants
The Leibniz formula for determinants expresses the determinant of an n × n matrix as a signed sum over all n! permutations, a definition introduced by Leibniz in 1693.
Leibniz formula for π
The Leibniz formula for π, also called the Gregory–Leibniz series, is the alternating series 1 − 1/3 + 1/5 − 1/7 + ⋯ that sums to π/4.
Leibniz integral rule
The Leibniz integral rule, or differentiation under the integral sign, is a calculus formula for differentiating a definite integral whose limits or integrand depend on a parameter.
Leibniz Supercomputing Centre
The Leibniz Supercomputing Centre (Leibniz-Rechenzentrum, LRZ) is the supercomputing facility for Munich's universities in Garching, Germany, founded in 1962 and home to the SuperMUC-NG supercomputer.
Leibniz–Newton calculus controversy
The Leibniz–Newton calculus controversy was a priority dispute between Isaac Newton and Gottfried Wilhelm Leibniz over who invented calculus, fought mainly from 1708 to 1716.
Leibniz's notation
Leibniz's notation is the standard calculus notation introduced by Gottfried Wilhelm Leibniz in 1675, using dx, dy, the derivative dy/dx, and the integral sign ∫, first published in 1684.
Leibstadt nuclear power plant
The Leibstadt Nuclear Power Plant (Kernkraftwerk Leibstadt, KKL) is Switzerland's youngest and most powerful nuclear plant, a boiling water reactor on the High Rhine operating since 1984.
Leica Camera
Leica Camera AG is a German manufacturer of cameras, lenses, and sports optics based in Wetzlar, known for the Leica I of 1925, the first mass-produced 35 mm camera.
Leica M3
The Leica M3 is a 35 mm rangefinder camera introduced by Ernst Leitz in Wetzlar, Germany, at Photokina in 1954, the first of the Leica M series.
Leica Microsystems
Leica Microsystems is a German microscope and scientific imaging manufacturer headquartered in Wetzlar, tracing its origins to an optical institute founded there in 1849, and owned by Danaher.
Leicester
Leicester: largest city in the English East Midlands, a unitary authority of 368,581 people (2021 census). One of the UK's first minority-majority cities, 43.4% Asian, 41% born abroad, Roman Ratae Corieltauvorum, Richard III's burial city.
Leicester City F.C.
Leicester City F.C. (The Foxes), English club founded 1884 as Leicester Fosse, based at King Power Stadium. Won the 2015-16 Premier League at 5,000-1 odds, plus one FA Cup and three League Cups.
Leicester Square
Leicester Square, Westminster, London: public square laid out 1670 around Leicester House, refurbished 2012, home of UK film premieres with Shakespeare fountain and Chaplin statue.
Leicester Tigers
Leicester Tigers are an English professional rugby union club formed in 1880 and based in Leicester. They have won a record eleven league championships and have never been relegated.
Leicestershire
Leicestershire, also known as the County of Leicester, is a rural landlocked county in the English East Midlands governed by a county council and seven district councils.
Leichter Panzerspähwagen
The Leichter Panzerspähwagen, German for light armored reconnaissance vehicle, was a family of four-wheel-drive armored cars built for the German Wehrmacht from 1935 to 1944.
Leiden
Leiden, a South Holland city of about 130,600 inhabitants, is home to the Netherlands' oldest university (founded 1575 after the Relief of Leiden) and is known for its canals, textile history, and Leiden Bio Science Park.
Leiden algorithm
The Leiden algorithm is a community detection method for large networks, created by Traag, Waltman, and van Eck at Leiden University in 2018 as a faster improvement on Louvain.
Leiden copper-plates
The Leiden copper-plates (லெய்டன் செப்பேடுகள்), also called the Anaimangalam copper-plates, are 11th-century Chola charters granting Anaimangalam village to a Buddhist vihara at Nagapattinam, held at Leiden University from 1862 until their return to India in 2026.
Leiden Declaration on Artificial Intelligence and Mathematics
The Leiden Declaration on Artificial Intelligence and Mathematics, published in June 2026, calls for action on AI's challenges to mathematics research and was endorsed by the International Mathematical Union.
Leiden Plaque
The Leiden Plaque, also called the Leyden Plate, is a carved jadeite Maya belt ornament dated to 320 CE, one of the earliest securely dated Classic Maya objects.
Leiden University
Leiden University (Universiteit Leiden), founded 8 February 1575 by William of Orange after the siege of Leiden, is the Netherlands' oldest university, based in Leiden and The Hague with seven faculties, the LUMC, and the CWTS Leiden Ranking.