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https://en.wikipedia.org/wiki/Gambler%27s%20ruin | In statistics, gambler's ruin is the fact that a gambler playing a game with negative expected value will eventually go broke, regardless of their betting system.
The concept was initially stated: A persistent gambler who raises their bet to a fixed fraction of the gambler's bankroll after a win, but does not reduce i... |
https://en.wikipedia.org/wiki/Parametrization%20%28geometry%29 | In mathematics, and more specifically in geometry, parametrization (or parameterization; also parameterisation, parametrisation) is the process of finding parametric equations of a curve, a surface, or, more generally, a manifold or a variety, defined by an implicit equation. The inverse process is called implicitizati... |
https://en.wikipedia.org/wiki/Glossary%20of%20order%20theory | This is a glossary of some terms used in various branches of mathematics that are related to the fields of order, lattice, and domain theory. Note that there is a structured list of order topics available as well. Other helpful resources might be the following overview articles:
completeness properties of partial ord... |
https://en.wikipedia.org/wiki/Tagged%20union | In computer science, a tagged union, also called a variant, variant record, choice type, discriminated union, disjoint union, sum type or coproduct, is a data structure used to hold a value that could take on several different, but fixed, types. Only one of the types can be in use at any one time, and a tag field expli... |
https://en.wikipedia.org/wiki/OpenAFS | OpenAFS is an open-source implementation of the Andrew distributed file system (AFS). AFS was originally developed at Carnegie Mellon University, and developed as a commercial product by the Transarc Corporation, which was subsequently acquired by IBM. At LinuxWorld on 15 August 2000, IBM announced their plans to relea... |
https://en.wikipedia.org/wiki/Clairaut%27s%20equation | In mathematical analysis, Clairaut's equation (or the Clairaut equation) is a differential equation of the form
where is continuously differentiable. It is a particular case of the Lagrange differential equation. It is named after the French mathematician Alexis Clairaut, who introduced it in 1734.
Solution
To sol... |
https://en.wikipedia.org/wiki/Strangeness | In particle physics, strangeness ("S") is a property of particles, expressed as a quantum number, for describing decay of particles in strong and electromagnetic interactions which occur in a short period of time. The strangeness of a particle is defined as:
where n represents the number of strange quarks () and n rep... |
https://en.wikipedia.org/wiki/127%20%28number%29 | 127 (one hundred [and] twenty-seven') is the natural number following 126 and preceding 128. It is also a prime number.
In mathematics
As a Mersenne prime, 127 is related to the perfect number 8128. 127 is also the largest known Mersenne prime exponent for a Mersenne number, , which is also a Mersenne prime. It was ... |
https://en.wikipedia.org/wiki/Mitchell%27s%20embedding%20theorem | Mitchell's embedding theorem, also known as the Freyd–Mitchell theorem or the full embedding theorem, is a result about abelian categories; it essentially states that these categories, while rather abstractly defined, are in fact concrete categories of modules. This allows one to use element-wise diagram chasing proofs... |
https://en.wikipedia.org/wiki/Thoralf%20Skolem | Thoralf Albert Skolem (; 23 May 1887 – 23 March 1963) was a Norwegian mathematician who worked in mathematical logic and set theory.
Life
Although Skolem's father was a primary school teacher, most of his extended family were farmers. Skolem attended secondary school in Kristiania (later renamed Oslo), passing the un... |
https://en.wikipedia.org/wiki/Exact%20functor | In mathematics, particularly homological algebra, an exact functor is a functor that preserves short exact sequences. Exact functors are convenient for algebraic calculations because they can be directly applied to presentations of objects. Much of the work in homological algebra is designed to cope with functors that ... |
https://en.wikipedia.org/wiki/Integral%20test%20for%20convergence | In mathematics, the integral test for convergence is a method used to test infinite series of monotonous terms for convergence. It was developed by Colin Maclaurin and Augustin-Louis Cauchy and is sometimes known as the Maclaurin–Cauchy test.
Statement of the test
Consider an integer and a function defined on the un... |
https://en.wikipedia.org/wiki/Monocyte | Monocytes are a type of leukocyte or white blood cell. They are the largest type of leukocyte in blood and can differentiate into macrophages and monocyte-derived dendritic cells. As a part of the vertebrate innate immune system monocytes also influence adaptive immune responses and exert tissue repair functions. Ther... |
https://en.wikipedia.org/wiki/Abstraction%20%28mathematics%29 | Abstraction in mathematics is the process of extracting the underlying structures, patterns or properties of a mathematical concept, removing any dependence on real world objects with which it might originally have been connected, and generalizing it so that it has wider applications or matching among other abstract de... |
https://en.wikipedia.org/wiki/Analytical%20mechanics | In theoretical physics and mathematical physics, analytical mechanics, or theoretical mechanics is a collection of closely related alternative formulations of classical mechanics. It was developed by many scientists and mathematicians during the 18th century and onward, after Newtonian mechanics. Since Newtonian mechan... |
https://en.wikipedia.org/wiki/Windows%209x | Windows 9x is a generic term referring to a series of Microsoft Windows computer operating systems produced from 1995 to 2000, which were based on the Windows 95 kernel and its underlying foundation of MS-DOS, both of which were updated in subsequent versions. The first version in the 9x series was Windows 95, which wa... |
https://en.wikipedia.org/wiki/Nine%20lemma | In mathematics, the nine lemma (or 3×3 lemma) is a statement about commutative diagrams and exact sequences valid in the category of groups and any abelian category. It states: if the diagram to the right is a commutative diagram and all columns as well as the two bottom rows are exact, then the top row is exact as wel... |
https://en.wikipedia.org/wiki/Alienators%3A%20Evolution%20Continues | Alienators: Evolution Continues (also known as Evolution: The Animated Series in some regions) is an animated comic science fiction television series. It is a continuation of the 2001 Ivan Reitman science fiction film, Evolution. 26 episodes were produced.
Created by Louis Gassin, the series is produced by DIC Enterta... |
https://en.wikipedia.org/wiki/Extreme%20point | In mathematics, an extreme point of a convex set in a real or complex vector space is a point in that does not lie in any open line segment joining two points of In linear programming problems, an extreme point is also called vertex or corner point of
Definition
Throughout, it is assumed that is a real or complex... |
https://en.wikipedia.org/wiki/160%20%28number%29 | 160 (one hundred [and] sixty) is the natural number following 159 and preceding 161.
In mathematics
160 is the sum of the first 11 primes, as well as the sum of the cubes of the first three primes.
Given 160, the Mertens function returns 0. 160 is the smallest number n with exactly 12 solutions to the equation φ(x) =... |
https://en.wikipedia.org/wiki/170%20%28number%29 | 170 (one hundred [and] seventy) is the natural number following 169 and preceding 171.
In mathematics
170 is the smallest n for which φ(n) and σ(n) are both square (64 and 324 respectively). But 170 is never a solution for φ(x), making it a nontotient. Nor is it ever a solution to x - φ(x), making it a noncototient.
... |
https://en.wikipedia.org/wiki/180%20%28number%29 | 180 (one hundred [and] eighty) is the natural number following 179 and preceding 181.
In mathematics
180 is an abundant number, with its proper divisors summing up to 366. 180 is also a highly composite number, a positive integer with more divisors than any smaller positive integer. One of the consequences of 180 havi... |
https://en.wikipedia.org/wiki/Network%20Based%20Application%20Recognition | Network Based Application Recognition (NBAR) is the mechanism used by some Cisco routers and switches to recognize a dataflow by inspecting some packets sent.
The networking equipment which uses NBAR does a deep packet inspection on some of the packets in a dataflow, to determine which traffic category the flow belong... |
https://en.wikipedia.org/wiki/190%20%28number%29 | 190 (one hundred [and] ninety) is the natural number following 189 and preceding 191.
In mathematics
190 is a triangular number, a hexagonal number, and a centered nonagonal number, the fourth figurate number (after 1, 28, and 91) with that combination of properties. It is also a truncated square pyramid number.
Inte... |
https://en.wikipedia.org/wiki/Deep%20packet%20inspection | Deep packet inspection (DPI) is a type of data processing that inspects in detail the data being sent over a computer network, and may take actions such as alerting, blocking, re-routing, or logging it accordingly. Deep packet inspection is often used for baselining application behavior, analyzing network usage, troubl... |
https://en.wikipedia.org/wiki/Data%20engineering | Data engineering refers to the building of systems to enable the collection and usage of data. This data is usually used to enable subsequent analysis and data science; which often involves machine learning. Making the data usable usually involves substantial compute and storage, as well as data processing
History
Ar... |
https://en.wikipedia.org/wiki/Geographical%20pole | A geographical pole or geographic pole is either of the two points on Earth where its axis of rotation intersects its surface. The North Pole lies in the Arctic Ocean while the South Pole is in Antarctica. North and South poles are also defined for other planets or satellites in the Solar System, with a North pole bei... |
https://en.wikipedia.org/wiki/Mass%20storage | In computing, mass storage refers to the storage of large amounts of data in a persisting and machine-readable fashion. In general, the term is used as large in relation to contemporaneous hard disk drives, but it has been used large in relation to primary memory as for example with floppy disks on personal computers.... |
https://en.wikipedia.org/wiki/IEEE%20802.15.4 | IEEE 802.15.4 is a technical standard which defines the operation of a low-rate wireless personal area network (LR-WPAN). It specifies the physical layer and media access control for LR-WPANs, and is maintained by the IEEE 802.15 working group, which defined the standard in 2003. It is the basis for the Zigbee, ISA10... |
https://en.wikipedia.org/wiki/Lusser%27s%20law | Lusser's law in systems engineering is a prediction of reliability. Named after engineer Robert Lusser, and also known as Lusser's product law or the probability product law of series components, it states that the reliability of a series of components is equal to the product of the individual reliabilities of the comp... |
https://en.wikipedia.org/wiki/Mini-ITX | Mini-ITX is a motherboard form factor developed by VIA Technologies in 2001. Mini-ITX motherboards have been traditionally used in small-configured computer systems. Originally, Mini-ITX was a niche standard designed for fanless cooling with a low power consumption architecture, which made them useful for home theater... |
https://en.wikipedia.org/wiki/Von%20Neumann%20bicommutant%20theorem | In mathematics, specifically functional analysis, the von Neumann bicommutant theorem relates the closure of a set of bounded operators on a Hilbert space in certain topologies to the bicommutant of that set. In essence, it is a connection between the algebraic and topological sides of operator theory.
The formal stat... |
https://en.wikipedia.org/wiki/Bicommutant | In algebra, the bicommutant of a subset S of a semigroup (such as an algebra or a group) is the commutant of the commutant of that subset. It is also known as the double commutant or second commutant and is written .
The bicommutant is particularly useful in operator theory, due to the von Neumann double commutant the... |
https://en.wikipedia.org/wiki/Gaussian%20period | In mathematics, in the area of number theory, a Gaussian period is a certain kind of sum of roots of unity. The periods permit explicit calculations in cyclotomic fields connected with Galois theory and with harmonic analysis (discrete Fourier transform). They are basic in the classical theory called cyclotomy. Closely... |
https://en.wikipedia.org/wiki/List%20of%20scientific%20constants%20named%20after%20people | This is a list of physical and mathematical constants named after people.
Eponymous constants and their influence on scientific citations have been discussed in the literature.
Apéry's constant – Roger Apéry
Archimedes' constant (, pi) – Archimedes
Avogadro constant – Amedeo Avogadro
Balmer's constant – Johann Jak... |
https://en.wikipedia.org/wiki/496%20%28number%29 | 496 (four hundred [and] ninety-six) is the natural number following 495 and preceding 497.
In mathematics
496 is most notable for being a perfect number, and one of the earliest numbers to be recognized as such. As a perfect number, it is tied to the Mersenne prime 31, 25 − 1, with 24 (25 − 1) yielding 496. Also relat... |
https://en.wikipedia.org/wiki/Crystal%20system | In crystallography, a crystal system is a set of point groups (a group of geometric symmetries with at least one fixed point). A lattice system is a set of Bravais lattices. Space groups are classified into crystal systems according to their point groups, and into lattice systems according to their Bravais lattices. Cr... |
https://en.wikipedia.org/wiki/Kryptos | Kryptos is a sculpture by the American artist Jim Sanborn located on the grounds of the Central Intelligence Agency (CIA) headquarters, the George Bush Center for Intelligence in Langley, Virginia. Since its dedication on November 3, 1990, there has been much speculation about the meaning of the four encrypted messages... |
https://en.wikipedia.org/wiki/Computer-aided%20engineering | Computer-aided engineering can be defined as the general usage of technology to aid in tasks related to engineering analysis. Any use of technology to solve or assist engineering issues falls under this umbrella.
Overview
Following alongside the consistent improvement in computer graphics and speed, computer aid assi... |
https://en.wikipedia.org/wiki/Duff%27s%20device | In the C programming language, Duff's device is a way of manually implementing loop unrolling by interleaving two syntactic constructs of C: the - loop and a switch statement. Its discovery is credited to Tom Duff in November 1983, when Duff was working for Lucasfilm and used it to speed up a real-time animation progra... |
https://en.wikipedia.org/wiki/Bruck%E2%80%93Ryser%E2%80%93Chowla%20theorem | The Bruck–Ryser–Chowla theorem is a result on the combinatorics of block designs that implies nonexistence of certain kinds of design. It states that if a (v, b, r, k, λ)-design exists with v = b (a symmetric block design), then:
if v is even, then k − λ is a square;
if v is odd, then the following Diophantine equat... |
https://en.wikipedia.org/wiki/C%20syntax | The syntax of the C programming language is the set of rules governing writing of software in C. It is designed to allow for programs that are extremely terse, have a close relationship with the resulting object code, and yet provide relatively high-level data abstraction. C was the first widely successful high-level l... |
https://en.wikipedia.org/wiki/Alexandre-Th%C3%A9ophile%20Vandermonde | Alexandre-Théophile Vandermonde (28 February 1735 – 1 January 1796) was a French mathematician, musician, and chemist who worked with Bézout and Lavoisier; his name is now principally associated with determinant theory in mathematics. He was born in Paris, and died there.
Biography
Vandermonde was a violinist, and bec... |
https://en.wikipedia.org/wiki/System%206 | System 6 (or System Software 6) is a graphical user interface-based operating system for Macintosh computers, made by Apple Computer. It was released in 1988, and is part of the classic Mac OS series. It is a monolithic operating system, with cooperative multitasking based on an improved MultiFinder. The boxed version ... |
https://en.wikipedia.org/wiki/Pure%20mathematics | Pure mathematics is the study of mathematical concepts independently of any application outside mathematics. These concepts may originate in real-world concerns, and the results obtained may later turn out to be useful for practical applications, but pure mathematicians are not primarily motivated by such applications.... |
https://en.wikipedia.org/wiki/Block%20matrix | In mathematics, a block matrix or a partitioned matrix is a matrix that is interpreted as having been broken into sections called blocks or submatrices. Intuitively, a matrix interpreted as a block matrix can be visualized as the original matrix with a collection of horizontal and vertical lines, which break it up, or ... |
https://en.wikipedia.org/wiki/Bi-quinary%20coded%20decimal | Bi-quinary coded decimal is a numeral encoding scheme used in many abacuses and in some early computers, including the Colossus. The term bi-quinary indicates that the code comprises both a two-state (bi) and a five-state (quinary) component. The encoding resembles that used by many abacuses, with four beads indicating... |
https://en.wikipedia.org/wiki/Excess-3 | Excess-3, 3-excess or 10-excess-3 binary code (often abbreviated as XS-3, 3XS or X3), shifted binary or Stibitz code (after George Stibitz, who built a relay-based adding machine in 1937) is a self-complementary binary-coded decimal (BCD) code and numeral system. It is a biased representation. Excess-3 code was used on... |
https://en.wikipedia.org/wiki/Cyberchase | Cyberchase is an animated sci-fi children's television series that airs on PBS Kids. The series centers around three children from Earth: Jackie, Matt and Inez, who are brought into Cyberspace, a digital universe, in order to protect the world from the villainous Hacker (Christopher Lloyd). They are able to prevent Hac... |
https://en.wikipedia.org/wiki/153%20%28number%29 | 153 (one hundred [and] fifty-three) is the natural number following 152 and preceding 154.
In mathematics
The number 153 is associated with the geometric shape known as the Vesica Piscis or Mandorla. Archimedes, in his Measurement of a Circle, referred to this ratio (153/265), as constituting the "measure of the fish... |
https://en.wikipedia.org/wiki/Micropaleontology | Micropaleontology (American spelling; spelled micropalaeontology in European usage) is the branch of paleontology (palaeontology) that studies microfossils, or fossils that require the use of a microscope to see the organism, its morphology and its characteristic details.
Microfossils
Microfossils are fossils that a... |
https://en.wikipedia.org/wiki/Tholin | Tholins (after the Greek () "hazy" or "muddy"; from the ancient Greek word meaning "sepia ink") are a wide variety of organic compounds formed by solar ultraviolet or cosmic ray irradiation of simple carbon-containing compounds such as carbon dioxide (), methane () or ethane (), often in combination with nitrogen () ... |
https://en.wikipedia.org/wiki/Sprite%20%28operating%20system%29 | Sprite is an experimental Unix-like distributed operating system developed at the University of California, Berkeley by John Ousterhout's research group between 1984 and 1992. Its notable features include support for single system image on computer clusters and the introduction of the log-structured filesystem. The Tcl... |
https://en.wikipedia.org/wiki/Secret%20sharing | Secret sharing (also called secret splitting) refers to methods for distributing a secret among a group, in such a way that no individual holds any intelligible information about the secret, but when a sufficient number of individuals combine their 'shares', the secret may be reconstructed. Whereas insecure secret shar... |
https://en.wikipedia.org/wiki/137%20%28number%29 | 137 (one hundred [and] thirty-seven) is the natural number following 136 and preceding 138.
Mathematics
the 33rd prime number; the next is 139, with which it comprises a twin prime, and thus 137 is a Chen prime.
an Eisenstein prime with no imaginary part and a real part of the form .
the fourth Stern prime.
a ... |
https://en.wikipedia.org/wiki/Predual | In mathematics, the predual of an object D is an object P whose dual space is D.
For example, the predual of the space of bounded operators is the space of trace class operators, and the predual of the space L∞(R) of essentially bounded functions on R is the Banach space L1(R) of integrable functions.
Abstract algebr... |
https://en.wikipedia.org/wiki/Daemon%20%28computing%29 | In multitasking computer operating systems, a daemon ( or ) is a computer program that runs as a background process, rather than being under the direct control of an interactive user. Traditionally, the process names of a daemon end with the letter d, for clarification that the process is in fact a daemon, and for diff... |
https://en.wikipedia.org/wiki/Common%20operator%20notation | In programming languages, scientific calculators and similar common operator notation or operator grammar is a way to define and analyse mathematical and other formal expressions. In this model a linear sequence of tokens are divided into two classes: operators and operands.
Operands are objects upon which the operato... |
https://en.wikipedia.org/wiki/Operator%20associativity | In programming language theory, the associativity of an operator is a property that determines how operators of the same precedence are grouped in the absence of parentheses. If an operand is both preceded and followed by operators (for example, ^ 3 ^), and those operators have equal precedence, then the operand may b... |
https://en.wikipedia.org/wiki/List%20of%20Mac%20software | The following is a list of Mac software – notable computer applications for current macOS operating systems.
For software designed for the classic Mac OS, see List of old Macintosh software.
Audio software
Digital audio workstations
Ableton Live
Ardour
Cubase
Digital Performer
GarageBand
Logic Pro and MainStage
RE... |
https://en.wikipedia.org/wiki/Ramanujan%E2%80%93Soldner%20constant | In mathematics, the Ramanujan–Soldner constant (also called the Soldner constant) is a mathematical constant defined as the unique positive zero of the logarithmic integral function. It is named after Srinivasa Ramanujan and Johann Georg von Soldner.
Its value is approximately μ ≈ 1.45136923488338105028396848589202744... |
https://en.wikipedia.org/wiki/Email%20spam | Email spam, also referred to as junk email, spam mail, or simply spam, is unsolicited messages sent in bulk by email (spamming). The name comes from a Monty Python sketch in which the name of the canned pork product Spam is ubiquitous, unavoidable, and repetitive. Email spam has steadily grown since the early 1990s, an... |
https://en.wikipedia.org/wiki/Academy%20of%20Interactive%20Arts%20%26%20Sciences | The Academy of Interactive Arts & Sciences (AIAS) is a non-profit organization of video game industry professionals. It organizes the annual Design Innovate Communicate Entertain summit, better known as D.I.C.E., which includes the presentations of the D.I.C.E. Awards.
History
Andrew S. Zucker, an attorney in the ent... |
https://en.wikipedia.org/wiki/Edinburgh%20Multiple%20Access%20System | The Edinburgh Multi-Access System (EMAS) was a mainframe computer operating system at the University of Edinburgh. The system went online in 1971.
EMAS was a powerful and efficient general purpose multi-user system which coped with many of the computing needs of the University of Edinburgh and the University of Kent (... |
https://en.wikipedia.org/wiki/Web%20developer | A web developer is a programmer who develops World Wide Web applications using a client–server model. The applications typically use HTML, CSS, and JavaScript in the client, and any general-purpose programming language in the server. HTTP is used for communications between client and server. A web developer may special... |
https://en.wikipedia.org/wiki/Expansion%20pack | An expansion pack, expansion set, supplement, or simply expansion, is an addition to an existing role-playing game, tabletop game, video game, collectible card game or miniature wargame. These add-ons usually add new game areas, weapons, objects, characters, adventures or an extended storyline to an already-released ga... |
https://en.wikipedia.org/wiki/Potrzebie | Potrzebie (; dative/locative of potrzeba, "a need") is a Polish word popularized by its non sequitur use as a running gag in the early issues of Mad not long after the comic book began in 1952.
Origin
Mad editor Harvey Kurtzman spotted the word printed in the Polish language section of a multi-languaged "Instructions... |
https://en.wikipedia.org/wiki/Ring%20of%20integers | In mathematics, the ring of integers of an algebraic number field is the ring of all algebraic integers contained in . An algebraic integer is a root of a monic polynomial with integer coefficients: . This ring is often denoted by or . Since any integer belongs to and is an integral element of , the ring is always ... |
https://en.wikipedia.org/wiki/Equicontinuity | In mathematical analysis, a family of functions is equicontinuous if all the functions are continuous and they have equal variation over a given neighbourhood, in a precise sense described herein.
In particular, the concept applies to countable families, and thus sequences of functions.
Equicontinuity appears in the ... |
https://en.wikipedia.org/wiki/Ideal%20norm | In commutative algebra, the norm of an ideal is a generalization of a norm of an element in the field extension. It is particularly important in number theory since it measures the size of an ideal of a complicated number ring in terms of an ideal in a less complicated ring. When the less complicated number ring is tak... |
https://en.wikipedia.org/wiki/James%20Clark%20%28programmer%29 | James Clark (born 23 February 1964) is a software engineer and creator of various open-source software including groff, expat and several XML specifications.
Education and early life
Clark was born in London and educated at Charterhouse School and Merton College, Oxford where he studied Mathematics and Philosophy.
Ca... |
https://en.wikipedia.org/wiki/Ecotone | An ecotone is a transition area between two biological communities, where two communities meet and integrate. It may be narrow or wide, and it may be local (the zone between a field and forest) or regional (the transition between forest and grassland ecosystems). An ecotone may appear on the ground as a gradual blendin... |
https://en.wikipedia.org/wiki/Backdraft | A backdraft (North American English) or backdraught (British English) is the abrupt burning of superheated gasses in a fire caused when oxygen rapidly enters a hot, oxygen-depleted environment; for example, when a window or door to an enclosed space is opened or broken. Backdrafts are typically seen as a blast of smoke... |
https://en.wikipedia.org/wiki/PiHex | PiHex was a distributed computing project organized by Colin Percival to calculate specific bits of . 1,246 contributors used idle time slices on almost two thousand computers to make its calculations. The software used for the project made use of Bellard's formula, a faster version of the BBP formula.
History
To calc... |
https://en.wikipedia.org/wiki/Okinawa%20diet | The Okinawa diet describes the traditional dietary practices of indigenous people of the Ryukyu Islands (belonging to Japan), which were claimed to have contributed to their relative longevity over a period of study in the 20th century.
Relative longevity
As assessed over 1949 to 1998, people from the Ryukyu Islands (... |
https://en.wikipedia.org/wiki/Overeating | Overeating occurs when an individual consumes more calories in relation to the energy that is expended via physical activity or expelled via excretion, leading to weight gain and often obesity. Overeating is the defining characteristic of binge eating disorder.
This term may also be used to refer to specific episodes ... |
https://en.wikipedia.org/wiki/Vanish%20at%20infinity | In mathematics, a function is said to vanish at infinity if its values approach 0 as the input grows without bounds. There are two different ways to define this with one definition applying to functions defined on normed vector spaces and the other applying to functions defined on locally compact spaces.
Aside from th... |
https://en.wikipedia.org/wiki/Standard%20basis | In mathematics, the standard basis (also called natural basis or canonical basis) of a coordinate vector space (such as or ) is the set of vectors, each of whose components are all zero, except one that equals 1. For example, in the case of the Euclidean plane formed by the pairs of real numbers, the standard basis ... |
https://en.wikipedia.org/wiki/Alidade | An alidade () (archaic forms include alhidade, alhidad, alidad) or a turning board is a device that allows one to sight a distant object and use the line of sight to perform a task. This task can be, for example, to triangulate a scale map on site using a plane table drawing of intersecting lines in the direction of th... |
https://en.wikipedia.org/wiki/Powerful%20number | A powerful number is a positive integer m such that for every prime number p dividing m, p2 also divides m. Equivalently, a powerful number is the product of a square and a cube, that is, a number m of the form m = a2b3, where a and b are positive integers. Powerful numbers are also known as squareful, square-full, or ... |
https://en.wikipedia.org/wiki/Lotka%E2%80%93Volterra%20equations | The Lotka–Volterra equations, also known as the Lotka–Volterra predator–prey model, are a pair of first-order nonlinear differential equations, frequently used to describe the dynamics of biological systems in which two species interact, one as a predator and the other as prey. The populations change through time accor... |
https://en.wikipedia.org/wiki/Stenomask | A stenomask is a hand-held microphone built into a padded, sound-proof enclosure that fits over the speaker's mouth or nose and mouth. Some lightweight versions may be fitted with an elastic neck strap to hold them in place while freeing the user's hands for other tasks. The purpose of a stenomask is to allow a perso... |
https://en.wikipedia.org/wiki/Harmonic%20divisor%20number | In mathematics, a harmonic divisor number or Ore number is a positive integer whose divisors have a harmonic mean that is an integer. The first few harmonic divisor numbers are
1, 6, 28, 140, 270, 496, 672, 1638, 2970, 6200, 8128, 8190 .
Harmonic divisor numbers were introduced by Øystein Ore, who showed that every per... |
https://en.wikipedia.org/wiki/Central%20angle | A central angle is an angle whose apex (vertex) is the center O of a circle and whose legs (sides) are radii intersecting the circle in two distinct points A and B. Central angles are subtended by an arc between those two points, and the arc length is the central angle of a circle of radius one (measured in radians). T... |
https://en.wikipedia.org/wiki/Inscribed%20angle | In geometry, an inscribed angle is the angle formed in the interior of a circle when two chords intersect on the circle. It can also be defined as the angle subtended at a point on the circle by two given points on the circle.
Equivalently, an inscribed angle is defined by two chords of the circle sharing an endpoint.... |
https://en.wikipedia.org/wiki/Chinese%20wall | A Chinese wall or ethical wall is an information barrier protocol within an organization designed to prevent exchange of information or communication that could lead to conflicts of interest. For example, a Chinese wall may be established to separate people who make investments from those who are privy to confidential ... |
https://en.wikipedia.org/wiki/144%20%28number%29 | 144 (one hundred [and] forty-four) is the natural number following 143 and preceding 145. 144 is a dozen dozens, or one gross.
In mathematics
144 is the square of 12. It is also the twelfth Fibonacci number, following 89 and preceding 233, and the only Fibonacci number (other than 0, and 1) to also be a square. 144 is... |
https://en.wikipedia.org/wiki/666%20%28number%29 | 666 (six hundred [and] sixty-six) is the natural number following 665 and preceding 667.
In Christianity, 666 is referred to in (most manuscripts of) chapter 13 of the Book of Revelation of the New Testament as the "number of the beast."
In mathematics
666 is the sum of the first thirty-six natural numbers, which mak... |
https://en.wikipedia.org/wiki/Native%20POSIX%20Thread%20Library | The Native POSIX Thread Library (NPTL) is an implementation of the POSIX Threads specification for the Linux operating system.
History
Before the 2.6 version of the Linux kernel, processes were the schedulable entities, and there were no special facilities for threads.
However, it did have a system call — — which cre... |
https://en.wikipedia.org/wiki/List%20of%20IEC%20standards | This is an incomplete list of standards published by the International Electrotechnical Commission (IEC).
The numbers of older IEC standards were converted in 1997 by adding 60000; for example IEC 27 became IEC 60027.
IEC standards often have multiple sub-part documents; only the main title for the standard is listed ... |
https://en.wikipedia.org/wiki/Conpoy | Conpoy or dried scallop is a type of Cantonese dried seafood product that is made from the adductor muscle of scallops. The smell of conpoy is marine, pungent, and reminiscent of certain salt-cured meats. Its taste is rich in umami due to its high content of various free amino acids, such as glycine, alanine, and gluta... |
https://en.wikipedia.org/wiki/Space%20group | In mathematics, physics and chemistry, a space group is the symmetry group of a repeating pattern in space, usually in three dimensions. The elements of a space group (its symmetry operations) are the rigid transformations of the pattern that leave it unchanged. In three dimensions, space groups are classified into 219... |
https://en.wikipedia.org/wiki/Life%20on%20Mars | The possibility of life on Mars is a subject of interest in astrobiology due to the planet's proximity and similarities to Earth. To date, no proof of past or present life has been found on Mars. Cumulative evidence suggests that during the ancient Noachian time period, the surface environment of Mars had liquid water ... |
https://en.wikipedia.org/wiki/500%20%28number%29 | 500 (five hundred) is the natural number following 499 and preceding 501.
Mathematical properties
500 = 22 × 53. It is an Achilles number and an Harshad number, meaning it is divisible by the sum of its digits. It is the number of planar partitions of 10.
Other fields
Five hundred is also
the number that many NAS... |
https://en.wikipedia.org/wiki/555%20%28number%29 | 555 (five hundred [and] fifty-five) is the natural number following 554 and preceding 556.
In mathematics
555 is a sphenic number. In base 10, it is a repdigit, and because it is divisible by the sum of its digits, it is a Harshad number. It is also a Harshad number in binary, base 11, base 13 and hexadecimal.
It is... |
https://en.wikipedia.org/wiki/Y-intercept | In analytic geometry, using the common convention that the horizontal axis represents a variable x and the vertical axis represents a variable y, a y-intercept or vertical intercept is a point where the graph of a function or relation intersects the y-axis of the coordinate system. As such, these points satisfy x = 0.... |
https://en.wikipedia.org/wiki/Ad%20hoc%20network | An ad hoc network refers to technologies that allow network communications on an ad hoc basis. Associated technologies include:
Wireless ad hoc network
Mobile ad hoc network
Vehicular ad hoc network
Intelligent vehicular ad hoc network
Protocols associated with ad hoc networking
Ad hoc On-Demand Distance Vector Routing... |
https://en.wikipedia.org/wiki/One%20half | One half (: halves) is the irreducible fraction resulting from dividing one (1) by two (2), or the fraction resulting from dividing any number by its double.
It often appears in mathematical equations, recipes, measurements, etc.
As a word
One half is one of the few fractions which are commonly expressed in natural ... |
https://en.wikipedia.org/wiki/720%20%28number%29 | 720 (seven hundred [and] twenty) is the natural number following 719 and preceding 721.
It is 6! (6 factorial) and a composite number with thirty divisors, more than any number below, making it a highly composite number. It is a Harshad number in every base from binary to decimal.
720 is expressible as the product of... |
https://en.wikipedia.org/wiki/700%20%28number%29 | 700 (seven hundred) is the natural number following 699 and preceding 701.
It is the sum of four consecutive primes (167 + 173 + 179 + 181), the perimeter of a Pythagorean triangle (75 + 308 + 317) and a Harshad number.
Integers from 701 to 799
Nearly all of the palindromic integers between 700 and 800 (i.e. nearly a... |
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