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In the theory of special functions in mathematics, the Horn functions (named for Jakob Horn) are the 34 distinct convergent hypergeometric series of order
Horn_function
Genus of fishes
lack the horn, while it is only the large relatively slow-swimming species which display the horn. Molecular phylogenetics show that horns independently
Naso_(fish)
Genus of spiders
female A. junodi. The horn of C. marshalli stands straight up about 1 cm in an adult. There are several probable functions for this horn: according to a study
Ceratogyrus
Animal anatomy of hornlike growths
Look up horn in Wiktionary, the free dictionary. A horn is a permanent pointed projection on the head of various animals that consists of a covering of
Horn_(anatomy)
Natural horn instrument
has kept its function and profile in many cattle raising, agricultural and hunter-gatherer societies. The oldest varieties were made of horns of Bovidae
Blowing_horn
Family of mammals
ῥινόκερως (rhinókerōs) 'nose-horned'; from ῥίς (rhis) 'nose' and κέρας (kéras) 'horn'; pl.: rhinoceros or rhinoceroses), commonly abbreviated to rhino, is a member
Rhinoceros
German mathematician
Jakob Horn (14 February 1867 – 24 February 1946) was a German mathematician who introduced Horn functions. Über systeme linearer Differentialgleichungen
Jakob_Horn
Focusing device in neutrino physics
neutrinos or antineutrinos, a focused neutrino beam is obtained. A magnetic horn functions by using high strength pulsed currents (hundreds of kA) to produce a
Magnetic_horn
Peninsula and geopolitical region
The Horn of Africa (HOA), also known as the Somali Peninsula, is a large peninsula and geopolitical region located in the easternmost part of mainland
Horn_of_Africa
Loudspeaker using an acoustic horn
partitions to form a zigzag flaring duct which functions as a horn; this type is called a folded horn speaker. The horn serves to improve the coupling efficiency
Horn_loudspeaker
Geometric figure which has infinite surface area but finite volume
Gabriel's horn (also called Torricelli's trumpet) is a type of geometric figure that has infinite surface area but finite volume. The name refers to the
Gabriel's_horn
Family of musical instruments
Natural horn Bugle Post horn French horn German horn Vienna horn Wagner tuba Saxhorns, including: Alto horn (UK: tenor horn), pitched in E♭ Baritone horn, pitched
Horn_(instrument)
Problem in formal logic
Horn-satisfiability, or HORNSAT, is the problem of deciding whether a given conjunction of propositional Horn clauses is satisfiable or not. Horn-satisfiability
Horn-satisfiability
Funnel-shaped waveguide radio device
A horn antenna or microwave horn is an antenna that consists of a flaring metal waveguide shaped like a horn to direct radio waves in a beam. Horns are
Horn_antenna
Primary inlet of the Bosphorus in Istanbul, Turkey
Golden Horn (Turkish: Altın Boynuz or Haliç) is a major urban waterway and the primary inlet of the Bosphorus in Istanbul, Turkey. Golden Horn connects
Golden_Horn
Mathematical function, denoted exp(x) or e^x
In mathematics, the exponential function is the unique real function which maps zero to one and has a derivative everywhere equal to its value. It is denoted
Exponential_function
Stethoscope used to listen to the heart rate of a fetus
millimetres (7.9 in) long. It functions similarly to an ear trumpet by amplifying sound. The user holds the wide end of the horn against the pregnant woman's
Pinard_horn
British breed of sheep
Wiltshire Horn was until the eighteenth century one of the predominant sheep breeds of southern England. For hundreds of years, it served a clear function on
Wiltshire_Horn
Extinct genus of rodents
America, mostly Nebraska. The role of the horns of Ceratogaulus is subject to much speculation. Several functions have been hypothesized (see below for a
Ceratogaulus
Three columns of grey matter within the spinal cord
located in the other two grey columns in the spinal cord. The function of the spinal dorsal horn is to process and integrate sensory information from the peripheral
Grey_columns
Spirit in Basque mythology
witches and elves. In that lunch it was served human-meat and his horns functioned as gigantic candles. To continue with the celebration, Aker and his
Akerbeltz
Ultrasonic device
for most practical applications of power ultrasound. Another function of the ultrasonic horn is to efficiently transfer the acoustic energy from the ultrasonic
Ultrasonic_horn
Hankel: Hankel function Heine: Heine functions Charles Hermite: Hermite polynomials Karl L. W. M. Heun (1859 – 1929): Heun's equation J. Horn: Horn hypergeometric
List of eponyms of special functions
List_of_eponyms_of_special_functions
Noisemaking device
produced by the horn. The longer the horn, the lower the pitch. Larger air horns used on ships and foghorns function similarly to a whistle; instead of
Air_horn
1876 battle of the Great Sioux War
Yellowstone area. On the way he noted that the Crow hunted buffalo on the "Small Horn River". St. Louis-based fur trader Manuel Lisa built Fort Raymond in 1807
Battle_of_the_Little_Bighorn
Legendary single-horned horse-like creature
described since antiquity as a beast with a single large, pointed, spiraling horn projecting from its forehead. In European literature and art, the unicorn
Unicorn
Aerophone made from an ox horn or water buffalo horn
be either blown or sucked to produce a tone. Both ends of the horn are open and function as finger holes to change the pitch, the pointed end covered by
Sneng
Native American ceremonial site in Wyoming, US
to the Big Horn Medicine Wheel, dates back over ten thousand years. No indigenous people have publicly claimed to have built the Big Horn Medicine Wheel
Medicine Wheel/Medicine Mountain National Historic Landmark
Medicine_Wheel/Medicine_Mountain_National_Historic_Landmark
Legendary object in European and Asian cultures
venom) or against the plague. The horn was prepared in several ways, in solid form, or by infusion Its prophylactic function and magical power were assumed
Unicorn_horn
Genus of Late Cretaceous dinosaur
likely preyed upon by Tyrannosaurus Rex. The functions of the frills and three distinctive facial horns on its head have inspired countless debates. Traditionally
Triceratops
Low-pitched brass instrument
The baritone horn, or often simply the baritone, is a valved brass instrument pitched in B♭ in the saxhorn family, employed chiefly in brass, military
Baritone_horn
Loudspeaker
12-inch speaker driver. It functions as a mobile audio input station to project audio content a distance of one kilometre. Horn Massive is a monophonic sound
Horn_Massive
American biologist (1897–1972)
the bull grew the horn buds fused together and started to form a single, straight horn about a foot in length. The horn functioned very well for the bull
W._Franklin_Dove
Vertebrate brain region
earliest description of the ridge running along the floor of the inferior horn of the lateral ventricle comes from the Venetian anatomist Julius Caesar
Hippocampus
Organ central to the nervous system
myelencephalon). The spinal cord, which directly coordinates somatic functions below the head, can be considered a caudal extension of the myelencephalon
Brain
Bone situated in the neck between the chin and the thyroid-cartilage
consists of a central part called the body, and two pairs of horns, the greater and lesser horns. The body of the hyoid bone is its central section.[clarification
Hyoid_bone
Species of North American hoofed mammal
The pronghorn (UK: /ˈprɒŋ.hɔːrn/, US: /ˈprɔːŋ.-/) (Antilocapra americana) is a species of artiodactyl (even-toed, hoofed) mammal indigenous to interior
Pronghorn
Hungarian-American mathematician
theory of Horn functions, Boros, Crama & Hammer (1990) proved that all "prime implicates" of a Horn CNF can be generated efficiently, extended Horn logic
Endre_Boros
Horn instrument made from ivory
was said to have used this horn for hunting as well as war. Additionally, these horns sometimes had a religious function. For example, olifants were
Olifant_(instrument)
Type of mathematical expression
substitution to the substituted value is a function, called a polynomial function; see § Polynomial functions. This can be expressed more concisely by using
Polynomial
Species of shark
Sharks portal The horn shark (Heterodontus francisci) is a species of bullhead shark, in the family Heterodontidae. It is endemic to the coastal waters
Horn_shark
contemporary instruments which evolved from signal instruments, such as the natural horn evolving to the trumpet. The oldest musical signaling instrument is the drum
Signal_instrument
Iron Age bronze artifact found in Scotland
agreed that the horns are somewhat later than the cap, and in a rather different style. Whatever the original appearance and functions of the objects,
Torrs_Pony-cap_and_Horns
Iconographic convention
The Horns of Moses are an iconographic convention common in Latin Christianity whereby Moses was presented as having two horns on his head, later replaced
Horns_of_Moses
Physical transmission device
A horn antenna or microwave horn is an antenna that consists of a flaring metal waveguide shaped like a horn to direct radio waves in a beam. Horns are
Microwave_antenna
Genus of theropod dinosaur from the Late Jurassic period
Ceratosaurus /ˌsɛrətoʊˈsɔːrəs/ (from Greek κέρας / κέρατος keras / keratos 'horn' and σαῦρος sauros 'lizard') is a genus of carnivorous theropod dinosaur
Ceratosaurus
Species of anglerfish
maturity, its dorsal fin becomes a single spine-like projection (thought to function primarily as a lure for prey). The red-lipped batfish was first formally
Red-lipped_batfish
Type of loudspeaker
driver. Hanna, C. R.; Slepian, J. (September 1977) [1924]. "The Function and Design of Horns for Loudspeakers (Reprint)". Journal of the Audio Engineering
Compression_driver
Ethnic group
other materials such as wood, matting, horns, or bark. Wooden troughs functioned as dishes while horns functioned as drinking pieces. Kettles were obtained
Gwichyaa_Gwichʼin
Curve traced by a point on a rod as one end is dragged along a line
P. G. A. H. Voigt patented a horn loudspeaker design based on the assumption that a wave front traveling through the horn is spherical of a constant radius
Tractrix
Facial disorder due to damage of the sympathetic nerves
Horner's syndrome, also known as oculosympathetic paresis, is a combination of symptoms that arises when a group of nerves known as the sympathetic trunk
Horner's_syndrome
Genus of dinosaur from the Late Cretaceous period
theropod, Carnotaurus was highly specialized and distinctive. It had two thick horns above the eyes, a unique feature unseen in all other carnivorous dinosaurs
Carnotaurus
American mathematician
Roger Alan Horn (born January 19, 1942) is an American mathematician specializing in matrix analysis. He was research professor of mathematics at the University
Roger_Horn
Group of neurons
group of neurons located in the ventral part (lamina IX) of the anterior horn of the sacral region of the human spinal cord involved in the maintenance
Onuf's_nucleus
1st millennium BC process
suggested two distinct trajectories to social complexity in the northern Horn of Africa. An early culture in the Eritrean-Sudanese lowlands was the Atbai
Sabaeans in the Horn of Africa
Sabaeans_in_the_Horn_of_Africa
Horn-like structure on some animal heads
Ossicones are distinguished from the superficially similar structures of horns and antlers by their unique development and a permanent covering of skin
Ossicone
Supernatural animal
purity. In the King James Bible, Psalm 92:10 states, "My horn shalt thou exalt like the horn of a unicorn." This is because the translators of the King
Legendary_creature
Intelligence of machines
Inference in both Horn clause logic and first-order logic is undecidable, and therefore intractable. However, backward reasoning with Horn clauses, which
Artificial_intelligence
Organisation that represents the interests of the recording industry
Arrangement Songwriter Composer Lyricist Conductor Disc jockey Hip-hop producer Horn section Record producer Rhythm section Orchestrator Session musician Backup
International Federation of the Phonographic Industry
International_Federation_of_the_Phonographic_Industry
Method of estimating optical flow
The Horn–Schunck method of estimating optical flow is a global method which introduces a global constraint of smoothness to solve the aperture problem
Horn–Schunck_method
Capital of the Eastern Roman and Ottoman empires
its takeover by the Ottoman Empire in 1453. After this, it continued to function as the Ottoman capital until the abolition of the Ottoman sultanate in
Constantinople
American mathematician (1893–1968)
differential equation, has had far-reaching implications in geometric function theory; it was used in the final solution of the Bieberbach conjecture
Charles_Loewner
Medical condition
Occipital horn syndrome (OHS), formerly considered a variant of Ehlers–Danlos syndrome, is an X-linked recessive mitochondrial and connective tissue disorder
Occipital_horn_syndrome
Indigenous people of the Great Plains
pipe (ptehíŋčala čhaŋnúŋpa) to the people through the chief Standing Hollow Horn—its bowl of red stone representing the Earth, its wooden stem all growing
Lakota_people
Group of ancient Mesopotamian deities
(the god of the heavens) and Ki (the goddess of earth), and their primary function was to decree the fates of humanity. In Sumerian, the name of this group
Anunnaki
Species of moth
brown, with seven diagonal blue lines. At the rear is a curved, thornlike horn. It can attain a length of 5 to 6 in (13 to 15 cm). The other two species
Death's-head_hawkmoth
Genus of ceratopsian dinosaurs
centimeters (2 feet) long and 15 centimeters (6 inches) wide. The function or functions of the horns and frills have been debated for many years. Styracosaurus
Styracosaurus
Hungarian politician (1932–2013)
Gyula János Horn (5 July 1932 – 19 June 2013) was a Hungarian politician who was the Prime Minister of Hungary from 1994 to 1998. Horn was the last Communist
Gyula_Horn
Societal or cultural prohibition
superstitions Bhoot (ghost) Chhaupadi Churel Ghosts in Bengali culture Jackal's horn Kuai Kuai culture Muhurta Navaratna Nazar Nazar battu Pichal Peri Puppy pregnancy
Taboo
Central organ of the human nervous system
specific functions, such as the sensory, motor, and association regions. Although the left and right hemispheres are broadly similar in shape and function, some
Human_brain
Professor of Physics (born 1937)
David Horn (Hebrew: דוד הורן; born 10 September 1937) is a Professor (Emeritus) of Physics in the School of Physics and Astronomy at Tel Aviv University
David Horn (Israeli physicist)
David_Horn_(Israeli_physicist)
Extinct genus of amphibians
anatomy of Diplocaulus. Douthitt argued that the most undisputed function was that the horns acted as a counterweight to offset the heavily-built forward
Diplocaulus
2024 studio album by Xiu Xiu
13" Frank Beltrame Italian Stiletto with Bison Horn Grips, colloquially referred to as 13", is the fourteenth studio album by American experimental band
13" Frank Beltrame Italian Stiletto with Bison Horn Grips
13"_Frank_Beltrame_Italian_Stiletto_with_Bison_Horn_Grips
Australian boxer (born 1992)
defeated Jeff Horn for the WBA Oceania middleweight title in Bendigo on 31 August 2019, this time winning via technical knockout. Horn was ranked #3 by
Michael_Zerafa
Angel in Abrahamic religions
interpreted Gabriel's name as "the strength of God", and his symbolic function in the gospel story as announcement of the strength or virtue of Christ
Gabriel
Continent
Aksum & the Northern Horn, 1000 BC-1300 AD. Boydell & Brewer Ltd. ISBN 978-1-84701-041-4. Fattovich, Rodolfo (2012). "The northern Horn of Africa in the first
Africa
Larva of a butterfly or moth
products. For example, clothes moths feed on wool, and horn moths feed on the hooves and horns of dead ungulates. Caterpillars are typically voracious
Caterpillar
Subfamily of beetles
rhinoceros-like horns. Other common names – some for particular groups of rhinoceros beetles – include Hercules beetles, unicorn beetles or horn beetles. Over
Dynastinae
Norse goddess
for him under assumed names. Freyja has numerous names, including Gefn, Hörn, Mardöll, Sýr, Vanadís, and Valfreyja. Freyja is attested in the Poetic Edda
Freyja
German free reed instrument
several reeds, each of which having its own horn. The instrument was created in imitation of the saxhorn. The horn can be confused with the shawm, as they
Martinshorn
a variety of references for each part of its body, including crabs and horns for its armor, a mixture of porous rock, rhinos and elephants for its skin
Features of the Marvel Cinematic Universe
Features_of_the_Marvel_Cinematic_Universe
Study of mental functions and behaviors
mental functions in individual and social behavior. Others explore the physiological and neurobiological processes that underlie cognitive functions and
Psychology
mathematics, the notions of an absolutely monotonic function and a completely monotonic function are two very closely related concepts. Both imply very
Absolutely and completely monotonic functions and sequences
Absolutely_and_completely_monotonic_functions_and_sequences
Italian military base in Djibouti
maritime operations. Its primary functions include monitoring commercial traffic and addressing piracy in the Horn of Africa, Gulf of Aden, and Indian
Italian Military Support Base in Djibouti
Italian_Military_Support_Base_in_Djibouti
Country in Southeastern Europe and West Asia
Korean War, including peacekeeping missions in Somalia, Yugoslavia and the Horn of Africa. It supported coalition forces in the First Gulf War, contributed
Turkey
Archipelagic country in Southeast Asia
lead?". The Washington Post. Archived from the original on May 5, 2022. Horner, Lindsey K. (March 14, 2024). "Oscillating between populism and liberalism
Philippines
American singer and songwriter (born 1958)
multimedia elements, advanced technology, and elaborate sound design, function as "extravagant show piece[s]" and "walking art show[s]". Chris Nelson
Madonna
Eleven monolithic churches found in Lalibela, Amhara Region, Ethiopia
Africa Institute. Taddesse, Tamrat (1977). "Ethiopia, the Red Sea and the Horn". The Cambridge History of Africa: Volume 3 (PDF). pp. 98–182. doi:10
Rock-Hewn_Churches,_Lalibela
Portrayal of sexual subject matter
artifacts found from the period, including phalluses carved out of bison horn and vulva inscribed on rocks. "It's sexually exaggerated to the point of
Pornography
German visual artist (1944–2024)
and 1980s Horn continued to explore the image of feathers. Many of her feathered pieces wrap a figure in the manner of a cocoon, or function as masks or
Rebecca_Horn
Species of beetle
well known for the prominent cephalic horn found on males. Male Japanese rhinoceros beetles will use this horn to fight other males for territory and
Japanese_rhinoceros_beetle
American engineer
Loud Speaker Systems" (1978) AES Journal Article Database: "The Function and Design of Horns for Loudspeakers" (1978) Audio Engineering Society Electronic
John_Kenneth_Hilliard
Problem of determining if a Boolean formula could be made true
deciding the satisfiability of a given conjunction of Horn clauses is called Horn-satisfiability, or HORN-SAT. It can be solved in polynomial time by a single
Boolean satisfiability problem
Boolean_satisfiability_problem
Widely revered deity in Germanic mythology
asleep a long time. Sigurd asks for her name, and the woman gives Sigurd a horn of mead to help him retain her words in his memory. The woman recites a heathen
Odin
Property of a mathematical matrix
Horn & Johnson (2013), p. 440, Theorem 7.2.7 Horn & Johnson (2013), p. 441, Theorem 7.2.10 Horn & Johnson (2013), p. 452, Theorem 7.3.11 Horn & Johnson
Definite_matrix
American sculptor
Milton Horn (September 1, 1906 – March 29, 1995) was a Ukrainian American sculptor and artist known for work that, according to a 1957 citation of honor
Milton_Horn
Country in West Asia
left Africa about 75,000 years ago across the Bab-el-Mandeb connecting the Horn of Africa and Arabia. The Arabian Peninsula is regarded as central to the
Saudi_Arabia
Connection between brain and spinal cord
innervate motor neurons of the spinal cord or brainstem (anterior (ventral) horn cells or certain cranial nerve nuclei), whereas the extrapyramidal system
Extrapyramidal_system
Genus of Late Cretaceous theropod
tyrannosaur tooth marks on a Triceratops brow horn and squamosal (a bone of the neck frill); the bitten horn is also broken, with new bone growth after the
Tyrannosaurus
Zodiac constellation in the southern hemisphere
constellations of the zodiac. Its name is Latin for "horned goat" or "goat horn" or "having horns like a goat's", and it is commonly represented in the form of a
Capricornus
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