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Inundation model
An inundation model is a computational model that simulates how floodwater spreads over land, predicting water depth and flooded extent from river, coastal, or rainfall events.
Inuōmetsuke
Inuōmetsuke was the dog administration of shogunal Japan, running enclosures around Edo under Tokugawa Tsunayoshi's Laws of Compassion, from a 1685 edict until abolition in 1709.
Iñupiaq oral literature
Iñupiaq oral literature is the narrative tradition of the Iñupiat, the Inuit people of northern Alaska, told in Iñupiaq through legends (unipkaat) and life-experience narratives (quliaqtuat).
Iñupiat
The Iñupiat are Inuit people of northwest and northern Alaska speaking Iñupiaq (four dialects; about 13,500 people, 3,000 speakers), with over 2,000 years of bowhead whaling and post-1971 ANCSA institutions.
Inushpua
Inushpua (Inušpua) was an Urartian royal prince of the late 9th century BC, named in cuneiform inscriptions as a son of Menua and grandson of King Išpuini of Urartu.
Inútil Bay
Inútil Bay (Bahía Inútil, Useless Bay), named 1827, is a 4776 km² semi-enclosed bay on northwest Tierra del Fuego, Chile, linked to the Strait of Magellan and Almirantazgo Sound, noted for poor anchorage and rich marine biodiversity.
Inuvialuit
Inuvialuit, Inuit of Canada's western Arctic, settled the 1984 Inuvialuit Final Agreement, the first modern treaty north of 60 degrees; self-government talks since 1996 remain unconcluded.
Inuvik
Inuvik, Northwest Territories: planned town founded 1958 to replace Aklavik, largest Canadian community north of the Arctic Circle, Dempster Highway terminus since 1979, population 3,337 (2025).
Inuyasha (犬夜叉)
Inuyasha (犬夜叉) is Rumiko Takahashi's Sengoku-era fantasy manga, serialized in Weekly Shonen Sunday 1996-2008 in 56 volumes, about Kagome and the half-demon Inuyasha gathering Shikon Jewel shards against Naraku; adapted by Sunrise into a 167-episode anime, Final Act, and four films.
Inuyasha (犬夜叉) (TV series)
Inuyasha (犬夜叉), Sunrise and Yomiuri TV's 167-episode 2000–2004 anime adapting Rumiko Takahashi's manga volumes 1–36: Kagome and the half-demon Inuyasha gather Shikon Jewel shards in the Sengoku period, continued by The Final Act (2009–10).
Inuyasha the Movie: Affections Touching Across Time (犬夜叉 時代を越える想い)
Inuyasha the Movie: Affections Touching Across Time (犬夜叉 時代を越える想い) is the first Inuyasha theatrical film, released December 15, 2001 by Toho; a 100-minute original story directed by Toshiya Shinohara in which Inuyasha and Kagome fight the continental demon Menomaru.
Inuyashiki (いぬやしき)
Inuyashiki (いぬやしき), also released abroad as Last Hero Inuyashiki, is a 2014-2017 science fiction manga by Gantz creator Hiroya Oku, serialized in Kodansha's Evening in 10 volumes, about a 58-year-old salaryman rebuilt as a machine after a UFO crash, adapted into a 2017 MAPPA anime and a 2018 live-action film.
Inuyashiki (いぬやしき) (2018 film)
Inuyashiki (いぬやしき) is a 2018 Japanese live-action sci-fi film directed by Shinsuke Sato, adapting Hiroya Oku's manga; it stars Noritake Kinashi and Takeru Satoh as opposing cyborgs, released by Toho on April 20, 2018, running 127 minutes.
Inva Mula
Inva Mula (Inva Mula-Tchako), Albanian lyric soprano born 1963 in Tirana; Operalia 1993 winner, voice of Diva Plavalaguna in The Fifth Element, Paris-based international opera career.
Invader (artist)
Invader is the pseudonym of an anonymous French street artist (born 1969; real name Franck Slama) who cements pixelated ceramic-tile mosaics inspired by the 1978 Space Invaders game in cities worldwide, over 4,000 works since 1998, including the ISS and Cancún Bay.
Invader Zim
Invader Zim is Jhonen Vasquez's Nickelodeon animated series (premiered March 30, 2001) about inept Irken alien Zim, his robot GIR, and nemesis Dib; cancelled 2002 after 27 episodes, later revived via Oni Press comics and the 2019 Netflix film Enter the Florpus.
Invader Zim: Enter the Florpus
Invader Zim: Enter the Florpus is a 71-minute 2019 Netflix animated film continuing the Nickelodeon series Invader Zim, written by Jhonen Vasquez, with the original voice cast returning as Zim, Dib, and the Membrane family.
Invaders from Mars (1953 film)
Invaders from Mars (1953) is William Cameron Menzies' color alien-invasion film in which a boy sees Martians mind-control his town, a Cold War Red Scare classic, National Film Registry 2024, remade by Tobe Hooper in 1986.
Invaders from Mars (1986 film)
Invaders from Mars (1986) is Tobe Hooper's Cannon Films remake of the 1953 alien-invasion classic, written by Dan O'Bannon and Don Jakoby, starring Karen Black and Hunter Carson, grossing $4.8 million on a $12 million budget.
Invaders of the Rokujouma!? (六畳間の侵略者!?)
Invaders of the Rokujouma!? (六畳間の侵略者!?) is a Japanese light novel series by Takehaya and Poco, HJ Bunko, since 2009, about Koutarou Satomi defending cheap room 106 from a ghost, magical girl, subterranean, and alien princess; 12-episode 2014 anime by Silver Link.
Invadopodia formation
Invadopodia formation: assembly of actin-rich ventral protrusions by invasive cancer cells that degrade the extracellular matrix via MT1-MMP and other proteases, driven by Cdc42, N-WASP, Arp2/3, cortactin, and Tks5; distinct from podosomes by hours-long lifetime and cancer-cell occurrence.
Invar
Invar, an iron–nickel alloy containing about 36 percent nickel, keeps its dimensions nearly constant with temperature, a property that earned Guillaume the 1920 Nobel Prize in Physics.
Invariant extended Kalman filter
The invariant extended Kalman filter (InEKF) is a Kalman filter variant for systems whose states lie on a Lie group, introduced by Silvère Bonnabel in 2007.
Invariant interval
The invariant interval is the quantity Δs² formed from the space and time separations of two events, the same in every inertial reference frame and central to special relativity.
Invariant learning
Invariant learning is a family of machine learning methods that trains predictors using only features whose relationship to the label is stable across training environments, aiming to generalize to unseen environments where spurious correlations break down.
Invariant mass
Invariant mass, also called rest mass or proper mass, is the mass of a particle or system that all inertial observers agree on; for systems it includes internal energy.
Invariant measure
An invariant measure, also called a stationary measure, is a measure left unchanged by a transformation, flow, or Markov kernel, central to ergodic theory and Markov chains.
Invariant risk minimization
Invariant risk minimization (IRM) is a machine learning method proposed in 2019 that seeks predictors relying on features stable across environments rather than spurious correlations.
Invariant subspace
An invariant subspace is a subspace of a vector space that a linear operator maps into itself, the concept underlying eigenvectors, the Jordan canonical form, and a famous open problem.
Invariant theory
Invariant theory is the branch of mathematics that studies polynomial functions left unchanged by a group action, classically begun in Arthur Cayley's 1845 paper and central to Hilbert's finiteness theorem.