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126 (number)
126 (one hundred ndtwenty-six) is the natural number following 125 and preceding 127. In mathematics As the binomial coefficient \tbinom, 126 is a central binomial coefficient and a pentatope number. It is also a decagonal number, a Harshad number and a pentagonal pyramidal number. As 125 + 1 it is σ3(5), the fifth value of the sum of cubed divisors function, and is a sum of two cubes. There are exactly 126 crossing points among the diagonals of a regular nonagon, 126 binary strings of length seven that are not repetitions of a shorter string, 126 different semigroups on four elements (up to isomorphism and reversal), and 126 different ways to partition a decagon into even polygons by diagonals. There are exactly 126 positive integers that are not solutions of the equation :x=abc+abd+acd+bcd, where ''a'', ''b'', ''c'', and ''d'' must themselves all be positive integers. It is the fifth Granville number, and the third such not to be a perfect number. Also, it is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural Number
In mathematics, the natural numbers are those numbers used for counting (as in "there are ''six'' coins on the table") and ordering (as in "this is the ''third'' largest city in the country"). Numbers used for counting are called ''Cardinal number, cardinal numbers'', and numbers used for ordering are called ''Ordinal number, ordinal numbers''. Natural numbers are sometimes used as labels, known as ''nominal numbers'', having none of the properties of numbers in a mathematical sense (e.g. sports Number (sports), jersey numbers). Some definitions, including the standard ISO/IEC 80000, ISO 80000-2, begin the natural numbers with , corresponding to the non-negative integers , whereas others start with , corresponding to the positive integers Texts that exclude zero from the natural numbers sometimes refer to the natural numbers together with zero as the whole numbers, while in other writings, that term is used instead for the integers (including negative integers). The natural ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Granville Number
In mathematics, specifically number theory, Granville numbers, also known as \mathcal-perfect numbers, are an extension of the perfect numbers. The Granville set In 1996, Andrew Granville proposed the following construction of a set \mathcal: :Let 1\in\mathcal, and for any integer n larger than 1, let n\in if ::\sum_ d \leq n. A Granville number is an element of \mathcal for which equality holds, that is, n is a Granville number if it is equal to the sum of its proper divisors that are also in \mathcal. Granville numbers are also called \mathcal-perfect numbers. General properties The elements of \mathcal can be -deficient, -perfect, or -abundant. In particular, 2-perfect numbers are a proper subset of \mathcal. S-deficient numbers Numbers that fulfill the strict form of the inequality in the above definition are known as \mathcal-deficient numbers. That is, the \mathcal-deficient numbers are the natural numbers for which the sum of their divisors in \mathcal is strictly le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
126 Film
: ''For the unrelated roll-film format produced from 1906 to 1949, see 126 film (roll format).'' 126 film is a cartridge-based film format used in still photography. It was introduced by Kodak in 1963, and is associated mainly with low-end point-and-shoot cameras, particularly Kodak's own Instamatic series of cameras. Although 126 was once very popular, it is no longer manufactured, and few photofinishers will process it. History and technical details In 1963, Kodak introduced a new film, encased in a plastic cartridge, for which they re-introduced the "126" designation. (The number was originally used for the unrelated 126 roll film format from 1906 to 1949). The term "126" was intended to show that images were 26 mm square, using Kodak's common 1xx film numbering system. However the image size is actually 28×28 mm, but usually reduced to approximately 26.5×26.5 mm by masking during printing or mounting. The 126 film format was defined in ISO 3029, whic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Highways Numbered 126
Route 126 or Highway 126 can refer to multiple roads: Canada * New Brunswick Route 126 * Ontario Highway 126 (former) * Prince Edward Island Route 126 Costa Rica * National Route 126 (Costa Rica), National Route 126 Japan * Japan National Route 126 United States * Interstate 126 * U.S. Route 126 (former) * Alabama State Route 126 * Arkansas Highway 126 * California State Route 126 * Connecticut Route 126 * Florida State Road 126 * Georgia State Route 126 * Illinois Route 126 * Indiana State Road 126 (former) * Iowa Highway 126 (former) * K-126 (Kansas highway) * Kentucky Route 126 * Louisiana Highway 126 * Maine State Route 126 * Maryland Route 126 (former) * Massachusetts Route 126 * M-126 (Michigan highway) (former) * Missouri Route 126 * New Hampshire Route 126 * County Route 126 (Bergen County, New Jersey) * New Mexico State Road 126 * New York State Route 126 ** County Route 126 (Herkimer County, New York) ** County Route 126 (Montgomery County, Ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asteroid
An asteroid is a minor planet of the inner Solar System. Sizes and shapes of asteroids vary significantly, ranging from 1-meter rocks to a dwarf planet almost 1000 km in diameter; they are rocky, metallic or icy bodies with no atmosphere. Of the roughly one million known asteroids the greatest number are located between the orbits of Mars and Jupiter, approximately 2 to 4 AU from the Sun, in the main asteroid belt. Asteroids are generally classified to be of three types: C-type, M-type, and S-type. These were named after and are generally identified with carbonaceous, metallic, and silicaceous compositions, respectively. The size of asteroids varies greatly; the largest, Ceres, is almost across and qualifies as a dwarf planet. The total mass of all the asteroids combined is only 3% that of Earth's Moon. The majority of main belt asteroids follow slightly elliptical, stable orbits, revolving in the same direction as the Earth and taking from three to six years to comple ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Main Belt
The asteroid belt is a torus-shaped region in the Solar System, located roughly between the orbits of the planets Jupiter and Mars. It contains a great many solid, irregularly shaped bodies, of many sizes, but much smaller than planets, called asteroids or minor planets. This asteroid belt is also called the main asteroid belt or main belt to distinguish it from other asteroid populations in the Solar System such as near-Earth asteroids and trojan asteroids. The asteroid belt is the smallest and innermost known circumstellar disc in the Solar System. About 60% of its mass is contained in the four largest asteroids: Ceres, Vesta, Pallas, and Hygiea. The total mass of the asteroid belt is calculated to be 3% that of the Moon. Ceres, the only object in the asteroid belt large enough to be a dwarf planet, is about 950 km in diameter, whereas Vesta, Pallas, and Hygiea have mean diameters less than 600 km. The remaining bodies range down to the size of a dust particle. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
126 Velleda
Velleda (minor planet designation: 126 Velleda) is a main-belt asteroid. It is probably a rather typical, albeit sizable, S-type asteroid. Named for Veleda, a priestess and prophet of the Germanic tribe of the Bructeri. It was discovered by Paul Henry on November 5, 1872, in Paris, France. It was his first credited discovery. He and his brother Prosper Henry discovered a total of 14 asteroids. This body is orbiting the Sun with a period of and an eccentricity (ovalness) of 0.11. The orbital plane is inclined by 2.9° to the plane of the ecliptic The ecliptic or ecliptic plane is the orbital plane of the Earth around the Sun. From the perspective of an observer on Earth, the Sun's movement around the celestial sphere over the course of a year traces out a path along the ecliptic agains .... It has a cross-section diameter of ~45 km. This asteroid rotates once every 5.36 hours. During each rotation the brightness varies by 0.22 magnitudes. References Exter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
126 BC
__NOTOC__ Year 126 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Lepidus and Orestes (or, less frequently, year 628 ''Ab urbe condita'') and the Third Year of Yuanshuo. The denomination 126 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Syria * Tyre successfully revolts from the Seleucid Empire. * Seleucus V Philometor succeeds his father Demetrius II as king of the Seleucid Empire. Due to his youth, his stepmother Cleopatra Thea acts as regent. Xiongnu * Winter 127/6: The Xiongnu ruler Junchen Chanyu dies, and his younger brother Yizhixie, the Luli King of the Left (East), overthrows Junchen's son Yudan and sets himself up as the new Chanyu. Yudan flees to the Han and dies a few months later. China * Summer: In retaliation for the Han conquest of the Ordos Plateau in the previous year, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
126 AD
Year 126 ( CXXVI) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Verus and Ambibulus (or, less frequently, year 879 ''Ab urbe condita''). The denomination 126 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire * The old Pantheon is demolished by Emperor Hadrian, and the construction of a new one begins (its date is uncertain, because Hadrian chooses not to inscribe the temple). Asia * First year of the ''Yongjian'' era of the Chinese Han Dynasty. Births * August 1 – Pertinax, Roman emperor (d. 193) * Lu Kang, Chinese politician and prefect (d. 195) Deaths * Domitia Longina, Roman empress (b. c. 53 AD) * Yan Ji Empress Yan Ji (閻姬) (died 28 February 126), formally Empress Ansi (安思皇后, literally "the peaceful ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
126th (other)
126th may refer to: * 126th (Peel) Battalion, CEF, a unit in the Canadian Expeditionary Force during the First World War *126th Air Refueling Squadron, a unit of the Wisconsin Air National Guard that flies the KC-135R Stratotanker *126th Air Refueling Wing, an Illinois Air National Guard air refueling wing located at Scott Air Force Base, Illinois. *126th Baluchistan Infantry, a regiment of the British Indian Army *126th Cavalry Regiment (United States), a United States military unit of the Michigan Army National Guard * 126th Delaware General Assembly, a meeting of the Delaware Senate and the Delaware House of Representatives * 126th Division (People's Republic of China), a division deployed by the People's Republic of China * 126th meridian east, a line of longitude 126° east of Greenwich *126th meridian west, a line of longitude 126° west of Greenwich * 126th Ohio Infantry, an infantry regiment in the Union Army during the American Civil War *126th Pennsylvania Infantry, an infa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Half Life
Half-life (symbol ) is the time required for a quantity (of substance) to reduce to half of its initial value. The term is commonly used in nuclear physics to describe how quickly unstable atoms undergo radioactive decay or how long stable atoms survive. The term is also used more generally to characterize any type of exponential (or, rarely, non-exponential) decay. For example, the medical sciences refer to the biological half-life of drugs and other chemicals in the human body. The converse of half-life (in exponential growth) is doubling time. The original term, ''half-life period'', dating to Ernest Rutherford's discovery of the principle in 1907, was shortened to ''half-life'' in the early 1950s. Rutherford applied the principle of a radioactive element's half-life in studies of age determination of rocks by measuring the decay period of radium to lead-206. Half-life is constant over the lifetime of an exponentially decaying quantity, and it is a characteristic unit f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unbihexium
Unbihexium, also known as element 126 or eka-plutonium, is the hypothetical chemical element with atomic number 126 and placeholder symbol Ubh. ''Unbihexium'' and ''Ubh'' are the temporary IUPAC name and symbol, respectively, until the element is discovered, confirmed, and a permanent name is decided upon. In the periodic table, unbihexium is expected to be a g-block superactinide and the eighth element in the 8th period. Unbihexium has attracted attention among nuclear physicists, especially in early predictions targeting properties of superheavy elements, for 126 may be a magic number of protons near the center of an island of stability, leading to longer half-lives, especially for 310Ubh or 354Ubh which may also have magic numbers of neutrons. Early interest in possible increased stability led to the first attempted synthesis of unbihexium in 1971 and searches for it in nature in subsequent years. Despite several reported observations, more recent studies suggest that these ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
