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Tucker's lemma
Tucker's lemma is a combinatorial theorem, equivalent to the Borsuk–Ulam theorem, stating that any antipodal labeling of a symmetrically triangulated ball forces an edge with opposite labels.
Tucking
Tucking conceals the penis and testes under clothing by guiding the testes into the inguinal canals and securing the position with gaffs, underwear, or medical tape; used for gender affirmation and performance, with risks including skin irritation, UTIs, and reduced sperm quality.
Tuckman's stages of group development
Tuckman's stages of group development, or the forming-storming-norming-performing model, is Bruce W. Tuckman's 1965 sequential model, extended with adjourning in 1977 by Tuckman and Jensen, widely used but with limited empirical support.
Tucson Electric Power
Tucson Electric Power (TEP) is a regulated electric utility serving Tucson and southern Arizona, founded in 1892 and a subsidiary of UNS Energy under Canada's Fortis Inc.
Tucson, Arizona
Tucson, Arizona: second-largest Arizona city (548,371 est. 2025) in the Sonoran Desert on the Santa Cruz River; founded as Presidio San Agustín del Tucson in 1775; home of the University of Arizona and first UNESCO City of Gastronomy.
Tucumán power station
Tucumán power station (Central Térmica Tucumán) is a 447 MW combined cycle thermal power plant at El Bracho in Tucumán Province, Argentina, owned by YPF Luz.
Tucumán Province
Tucumán Province, in northwest Argentina (NOA), is the country's smallest province (22,524 km²), capital San Miguel de Tucumán, where Argentine independence was declared on 9 July 1816; it leads national sugar and lemon production.
Tucumcari, New Mexico
Tucumcari, New Mexico: a Quay County railroad town founded in 1901 (Ragtown, Six Shooter Siding), later a Route 66 stop known for the Blue Swallow Motel, neon, and murals; population about 5,100.
Túcume
Túcume, also known as the Pyramids of Túcume, is a pre-Hispanic adobe settlement of 26 pyramids in the Lambayeque region of northern Peru, built from the 10th century.
Tucuruí Dam
The Tucuruí Dam (Usina Hidrelétrica de Tucuruí) is a hydroelectric dam on the Tocantins River in Pará, Brazil, inaugurated in 1984 with an installed capacity of 8,535 MW.
Tudeh Party of Iran (حزب توده ایران)
The Tudeh Party of Iran (حزب توده ایران, Party of the Masses of Iran) is a Marxist-Leninist party founded in 1941, the largest communist party in Iranian history, now banned and largely in exile.
Tudhaliya I/II
Tudhaliya I/II, also known as Tudhaliya II, was a Hittite great king who ruled in the mid-15th century BC, succeeding the assassinated Muwattalli I and opening renewed Hittite expansion.
Tudhaliya III
Tudhaliya III, also written Tudḫaliya III, was a Hittite king who reigned from about 1380 to 1355 BC, surviving attacks on several fronts and regaining lost territories.
Tudhaliya III's concentric invasions
Tudhaliya III's concentric invasions were simultaneous enemy attacks on the Hittite kingdom around 1400–1350 BC that burned the capital Hattusa before a counterattack restored Hittite power.
Tudhaliya IV
Tudhaliya IV, also known as Tudhaliyas IV, was a king of the Hittite empire who reigned c. 1237–1209 BC, fought Assyria near Nihriya, and enlarged Hattusa.
Tudhaliya IV's building programme at Hattusa
Tudhaliya IV's building program at Hattusa was the last major wave of royal construction at the Hittite capital under King Tudhaliya IV, c. 1237–1209 BC.
Tudhaliya IV's conquest of Cyprus
Tudhaliya IV's conquest of Cyprus was a Hittite military campaign against the island kingdom of Alashiya, generally identified with Cyprus, around 1220–1200 BC, the empire's only attested use of naval forces.
Tudhaliya of Carchemish
Tudhaliya of Carchemish was a king of Karkemish around the 10th century BC, placed after Suhi II in the city's monument list and known only from a stele fragment.
Tudhaliya the Younger
Tudhaliya the Younger was a Hittite prince, the designated heir to the throne, who died violently around the mid-14th century BC, clearing the way for Šuppiluliuma I.
Tudiya
Tudiya, also rendered Tudija, is the first of the seventeen early Assyrian kings the King List says "lived in tents", with no contemporary evidence for him.
Tudor architecture
Tudor architecture, also called Tudor Gothic, is the building style of England under the Tudor dynasty, 1485 to 1603, from Perpendicular Gothic churches to great houses like Longleat.
Tudor Arghezi
Tudor Arghezi, born Ion N. Theodorescu, was a Romanian poet and prose writer whose 1927 collection Cuvinte potrivite carried out the deepest reform of Romanian poetic language.
Tudor Casapu
Tudor Casapu (Fyodor Mikhaylovich Kasapu), born 1963, Moldovan weightlifter; 1992 Barcelona Olympic middleweight gold for the Unified Team and 1990 world champion; Moldova's only individual Olympic champion.
Tudor Dixon
Tudor Dixon, American businesswoman and conservative media personality, 2022 Republican nominee for Michigan governor; lost to Gretchen Whitmer after petition scandal cleared the primary field; steel-industry and Lumen News background.
Tudor domain
Tudor domain: a roughly 50-70 amino acid protein module (Royal Family with chromo, MBT, PWWP) that binds methylated lysine and arginine marks via an aromatic cage, functioning in RNA metabolism, splicing, and germline development; named after Drosophila Tudor and Henry VIII's fertility problems.
Tudor G. Jovin
Tudor Jovin is a vascular neurologist and neurointerventionalist, Chair of Neurology at Cooper University Health Care, known for leading the DAWN, REVASCAT, and BAOCHE thrombectomy trials.
Tudor Ganea
Tudor Ganea (1922–1971) was a mathematician working in algebraic topology, especially homotopy theory and Lusternik–Schnirelmann category, known for the Ganea conjecture, Ganea spaces, and the Eilenberg–Ganea theorem.
Tudor Investment Corporation
Tudor Investment Corporation is an American investment firm founded by Paul Tudor Jones II in 1980, headquartered in Stamford, Connecticut, and known for global macro hedge fund strategies.
Tudor period
The Tudor period (1485–1603) was the English dynasty's rule from Henry VII, victor at Bosworth, through Henry VIII's break with Rome and the Reformation, to Elizabeth I and the Armada, transforming Parliament, religion, and the state.
Tudor Revival architecture
Tudor Revival architecture, also called Mock Tudor or Tudor Style, revives late-medieval English manor and cottage traditions, with steep roofs and decorative half-timbering, peaking in the 1920s and 1930s.