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https://en.wikipedia.org/wiki/Software%20release%20life%20cycle | The software release life cycle is the process of developing, testing, and distributing a software product. It typically consists of several stages, such as pre-alpha, alpha, beta, and release candidate, before the final version, or "gold", is released to the public.
Pre-alpha refers to the early stages of developmen... |
https://en.wikipedia.org/wiki/Encapsulation%20%28computer%20programming%29 | In software systems, encapsulation refers to the bundling of data with the mechanisms or methods that operate on the data. It may also refer to the limiting of direct access to some of that data, such as an object's components. Encapsulation allows developers to present a consistent and usable interface which is indep... |
https://en.wikipedia.org/wiki/Hsiang%E2%80%93Lawson%27s%20conjecture | In mathematics, Lawson's conjecture states that the Clifford torus is the only minimally embedded torus in the 3-sphere S3. The conjecture was featured by the Australian Mathematical Society Gazette as part of the Millennium Problems series.
In March 2012, Simon Brendle gave a proof of this conjecture, based on maximu... |
https://en.wikipedia.org/wiki/Kernel%20panic | A kernel panic (sometimes abbreviated as KP) is a safety measure taken by an operating system's kernel upon detecting an internal fatal error in which either it is unable to safely recover or continuing to run the system would have a higher risk of major data loss. The term is largely specific to Unix and Unix-like sy... |
https://en.wikipedia.org/wiki/Parallel%20Virtual%20Machine | Parallel Virtual Machine (PVM) is a software tool for parallel networking of computers. It is designed to allow a network of heterogeneous Unix and/or Windows machines to be used as a single distributed parallel processor. Thus large computational problems can be solved more cost effectively by using the aggregate powe... |
https://en.wikipedia.org/wiki/Math%20rock | Math rock is a style of alternative and indie rock with roots in bands such as King Crimson and Rush. It is characterized by complex, atypical rhythmic structures (including irregular stopping and starting), counterpoint, odd time signatures, and extended chords. It bears similarities to post-rock.
Characteristics
M... |
https://en.wikipedia.org/wiki/Right-hand%20rule | In mathematics and physics, the right-hand rule is a convention and a mnemonic for deciding the orientation of axes in three-dimensional space. It is a convenient method for determining the direction of the cross product of two vectors.
There are two ways of applying the right hand rule. The first one is conventiona... |
https://en.wikipedia.org/wiki/Cotangent%20bundle | In mathematics, especially differential geometry, the cotangent bundle of a smooth manifold is the vector bundle of all the cotangent spaces at every point in the manifold. It may be described also as the dual bundle to the tangent bundle. This may be generalized to categories with more structure than smooth manifolds,... |
https://en.wikipedia.org/wiki/Scrapie | Scrapie () is a fatal, degenerative disease affecting the nervous systems of sheep and goats. It is one of several transmissible spongiform encephalopathies (TSEs), and as such it is thought to be caused by a prion. Scrapie has been known since at least 1732 and does not appear to be transmissible to humans. However, i... |
https://en.wikipedia.org/wiki/Language%20code | A language code is a code that assigns letters or numbers as identifiers or classifiers for languages. These codes may be used to organize library collections or presentations of data, to choose the correct localizations and translations in computing, and as a shorthand designation for longer forms of language names.
... |
https://en.wikipedia.org/wiki/Euler%27s%20four-square%20identity | In mathematics, Euler's four-square identity says that the product of two numbers, each of which is a sum of four squares, is itself a sum of four squares.
Algebraic identity
For any pair of quadruples from a commutative ring, the following expressions are equal:
Euler wrote about this identity in a letter dated May ... |
https://en.wikipedia.org/wiki/Blastulation | Blastulation is the stage in early animal embryonic development that produces the blastula. In mammalian development the blastula develops into the blastocyst with a differentiated inner cell mass and an outer trophectoderm. The blastula (from Greek βλαστός ( meaning sprout)) is a hollow sphere of cells known as blasto... |
https://en.wikipedia.org/wiki/Interphase | Interphase is the portion of the cell cycle that is not accompanied by visible changes under the microscope, and includes the G1, S and G2 phases. During interphase, the cell grows (G1), replicates its DNA (S) and prepares for mitosis (G2). A cell in interphase is not simply quiescent. The term quiescent (i.e. dormant... |
https://en.wikipedia.org/wiki/Western%20Digital | Western Digital Corporation (WDC, commonly known as Western Digital or WD) is an American computer drive manufacturer and data storage company, headquartered in San Jose, California. It designs, manufactures and sells data technology products, including data storage devices, data center systems and cloud storage servic... |
https://en.wikipedia.org/wiki/Kamal%20%28navigation%29 | A kamal, often called simply khashaba (wood in Arabic), is a celestial navigation device that determines latitude. The invention of the kamal allowed for the earliest known latitude sailing, and was thus the earliest step towards the use of quantitative methods in navigation. It originated with Arab navigators of the ... |
https://en.wikipedia.org/wiki/Flynn%27s%20taxonomy | Flynn's taxonomy is a classification of computer architectures, proposed by Michael J. Flynn in 1966 and extended in 1972. The classification system has stuck, and it has been used as a tool in the design of modern processors and their functionalities. Since the rise of multiprocessing central processing units (CPUs), ... |
https://en.wikipedia.org/wiki/Multivalued%20function | In mathematics, a multivalued function is a set-valued function with additional properties depending on context. The terms multifunction and many-valued function are sometimes also used.
A multivalued function of sets f : X → Y is a subset
Write f(x) for the set of those y ∈ Y with (x,y) ∈ Γf. If f is an ordinary ... |
https://en.wikipedia.org/wiki/Table%20of%20prime%20factors | The tables contain the prime factorization of the natural numbers from 1 to 1000.
When n is a prime number, the prime factorization is just n itself, written in bold below.
The number 1 is called a unit. It has no prime factors and is neither prime nor composite.
Properties
Many properties of a natural number n can... |
https://en.wikipedia.org/wiki/Table%20of%20divisors | The tables below list all of the divisors of the numbers 1 to 1000.
A divisor of an integer n is an integer m, for which n/m is again an integer (which is necessarily also a divisor of n). For example, 3 is a divisor of 21, since 21/7 = 3 (and therefore 7 is also a divisor of 21).
If m is a divisor of n then so is −m... |
https://en.wikipedia.org/wiki/McCarthy%2091%20function | The McCarthy 91 function is a recursive function, defined by the computer scientist John McCarthy as a test case for formal verification within computer science.
The McCarthy 91 function is defined as
The results of evaluating the function are given by M(n) = 91 for all integer arguments n ≤ 100, and M(n) = n − 10 fo... |
https://en.wikipedia.org/wiki/Unit%20testing | In computer programming, unit testing is a software testing method by which individual units of source code—sets of one or more computer program modules together with associated control data, usage procedures, and operating procedures—are tested to determine whether they are fit for use. It is a standard step in develo... |
https://en.wikipedia.org/wiki/Financial%20cryptography | Financial cryptography is the use of cryptography in applications in which financial loss could result from subversion of the message system. Financial cryptography is distinguished from traditional cryptography in that for most of recorded history, cryptography has been used almost entirely for military and diplomatic... |
https://en.wikipedia.org/wiki/Teratology | Teratology is the study of abnormalities of physiological development in organisms during their life span. It is a sub-discipline in medical genetics which focuses on the classification of congenital abnormalities in dysmorphology caused by teratogens. Teratogens are substances that may cause non-heritable birth defect... |
https://en.wikipedia.org/wiki/Cork%20taint | Cork taint is a broad term referring to an off-odor and off-flavor wine fault arising from the presence of 2,4,6-trichloroanisole (TCA), a chemical compound that represents one of the strongest off-flavors, and one "generated naturally in foods/beverages", in particular wines, that considerably reduce the quality of th... |
https://en.wikipedia.org/wiki/Gantt%20chart | A Gantt chart is a bar chart that illustrates a project schedule. It was designed and popularized by Henry Gantt around the years 1910–1915. Modern Gantt charts also show the dependency relationships between activities and the current schedule status.
Definition
A Gantt chart is a type of bar chart that illustrates a... |
https://en.wikipedia.org/wiki/Unix%20philosophy | The Unix philosophy, originated by Ken Thompson, is a set of cultural norms and philosophical approaches to minimalist, modular software development. It is based on the experience of leading developers of the Unix operating system. Early Unix developers were important in bringing the concepts of modularity and reusabil... |
https://en.wikipedia.org/wiki/Worse%20is%20better | Worse is better (also called the New Jersey style) is a term conceived by Richard P. Gabriel in a 1989 essay to describe the dynamics of software acceptance. It refers to the argument that software quality does not necessarily increase with functionality: that there is a point where less functionality ("worse") is a pr... |
https://en.wikipedia.org/wiki/Software%20design | Software design is the process by which an agent creates a specification of a software artifact intended to accomplish goals, using a set of primitive components and subject to constraints. The term is sometimes used broadly to refer to "all the activity involved in conceptualizing, framing, implementing, commissioning... |
https://en.wikipedia.org/wiki/Alternator | An alternator is an electrical generator that converts mechanical energy to electrical energy in the form of alternating current. For reasons of cost and simplicity, most alternators use a rotating magnetic field with a stationary armature. Occasionally, a linear alternator or a rotating armature with a stationary magn... |
https://en.wikipedia.org/wiki/Power%20inverter | A power inverter, inverter or invertor is a power electronic device or circuitry that changes direct current (DC) to alternating current (AC). The resulting AC frequency obtained depends on the particular device employed. Inverters do the opposite of rectifiers which were originally large electromechanical devices conv... |
https://en.wikipedia.org/wiki/Switched-mode%20power%20supply | A switched-mode power supply (SMPS), also called switching-mode power supply, switch-mode power supply, switched power supply, or simply switcher, is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently.
Like other power supplies, an SMPS transfers power from a DC ... |
https://en.wikipedia.org/wiki/Public%20key%20certificate | In cryptography, a public key certificate, also known as a digital certificate or identity certificate, is an electronic document used to prove the validity of a public key. The certificate includes the public key and information about it, information about the identity of its owner (called the subject), and the digita... |
https://en.wikipedia.org/wiki/Index%20of%20biology%20articles | Biology is the study of life and its processes. Biologists study all aspects of living things, including all of the many life forms on earth and the processes in them that enable life. These basic processes include the harnessing of energy, the synthesis and duplication of the materials that make up the body, the repro... |
https://en.wikipedia.org/wiki/Industrial%20ecology | Industrial ecology (IE) is the study of material and energy flows through industrial systems. The global industrial economy can be modelled as a network of industrial processes that extract resources from the Earth and transform those resources into by-products, products and services which can be bought and sold to me... |
https://en.wikipedia.org/wiki/Rootkit | A rootkit is a collection of computer software, typically malicious, designed to enable access to a computer or an area of its software that is not otherwise allowed (for example, to an unauthorized user) and often masks its existence or the existence of other software. The term rootkit is a compound of "root" (the tr... |
https://en.wikipedia.org/wiki/Generalised%20logistic%20function | The generalized logistic function or curve is an extension of the logistic or sigmoid functions. Originally developed for growth modelling, it allows for more flexible S-shaped curves. The function is sometimes named Richards's curve after F. J. Richards, who proposed the general form for the family of models in 1959.
... |
https://en.wikipedia.org/wiki/Tarpit%20%28networking%29 | A tarpit is a service on a computer system (usually a server) that purposely delays incoming connections. The technique was developed as a defense against a computer worm, and the idea is that network abuses such as spamming or broad scanning are less effective, and therefore less attractive, if they take too long. The... |
https://en.wikipedia.org/wiki/Wallace%E2%80%93Bolyai%E2%80%93Gerwien%20theorem | In geometry, the Wallace–Bolyai–Gerwien theorem, named after William Wallace, Farkas Bolyai and P. Gerwien, is a theorem related to dissections of polygons. It answers the question when one polygon can be formed from another by cutting it into a finite number of pieces and recomposing these by translations and rotation... |
https://en.wikipedia.org/wiki/GNOME%20Web | GNOME Web, called Epiphany until 2012 and still known by that code name, is a free and open-source web browser based on the GTK port of Apple's WebKit rendering engine, called WebKitGTK. It is developed by the GNOME project for Unix-like systems. It is the default and official web browser of GNOME, and part of the GNOM... |
https://en.wikipedia.org/wiki/Bowen%20ratio | The Bowen ratio is used to describe the type of heat transfer for a surface that has moisture. Heat transfer can either occur as sensible heat (differences in temperature without evapotranspiration) or latent heat (the energy required during a change of state, without a change in temperature). The Bowen ratio is gene... |
https://en.wikipedia.org/wiki/Mod%20perl | mod_perl is an optional module for the Apache HTTP server. It embeds a Perl interpreter into the Apache server. In addition to allowing Apache modules to be written in the Perl programming language, it allows the Apache web server to be dynamically configured by Perl programs. However, its most common use is so that dy... |
https://en.wikipedia.org/wiki/Chain%20%28algebraic%20topology%29 | In algebraic topology, a -chain
is a formal linear combination of the -cells in a cell complex. In simplicial complexes (respectively, cubical complexes), -chains are combinations of -simplices (respectively, -cubes), but not necessarily connected. Chains are used in homology; the elements of a homology group are equiv... |
https://en.wikipedia.org/wiki/MIL-STD-1750A | MIL-STD-1750A or 1750A is the formal definition of a 16-bit computer instruction set architecture (ISA), including both required and optional components, as described by the military standard document MIL-STD-1750A (1980). Since August 1996, it has been inactive for new designs.
In addition to the core ISA, the defini... |
https://en.wikipedia.org/wiki/Radio%20Data%20System | Radio Data System (RDS) is a communications protocol standard for embedding small amounts of digital information in conventional FM radio broadcasts. RDS standardizes several types of information transmitted, including time, station identification and program information.
The standard began as a project of the Europea... |
https://en.wikipedia.org/wiki/Petri%20net | A Petri net, also known as a place/transition (PT) net, is one of several mathematical modeling languages for the description of distributed systems. It is a class of discrete event dynamic system. A Petri net is a directed bipartite graph that has two types of elements: places and transitions. Place elements are dep... |
https://en.wikipedia.org/wiki/Carl%20Adam%20Petri | Carl Adam Petri (12 July 1926 in Leipzig – 2 July 2010 in Siegburg) was a German mathematician and computer scientist.
Life and work
Petri created his major scientific contribution, the concept of the Petri net, in 1939 at the age of 13, for the purpose of describing chemical processes. In 1941, his father told him a... |
https://en.wikipedia.org/wiki/Silicon%20carbide | Silicon carbide (SiC), also known as carborundum (), is a hard chemical compound containing silicon and carbon. A semiconductor, it occurs in nature as the extremely rare mineral moissanite, but has been mass-produced as a powder and crystal since 1893 for use as an abrasive. Grains of silicon carbide can be bonded tog... |
https://en.wikipedia.org/wiki/Zugzwang | Zugzwang (; ) is a situation found in chess and other turn-based games wherein one player is put at a disadvantage because of their obligation to make a move; a player is said to be "in zugzwang" when any legal move will worsen their position.
Although the term is used less precisely in games such as chess, it is used... |
https://en.wikipedia.org/wiki/Floradora | "Floradora", also called Keyword, was a doubly enciphered diplomatic code used by the Germans during the Second World War. The Allies used tabulating equipment, created by IBM, to break the code over period of more than a year in 1941 and 1942.
References
Budiansky, Stephen. Battle of wits: the complete story of co... |
https://en.wikipedia.org/wiki/Honeywell | Honeywell International Inc. is an American publicly traded, multinational conglomerate corporation headquartered in Charlotte, North Carolina. It primarily operates in four areas of business: aerospace, building technologies, performance materials and technologies (PMT), and safety and productivity solutions (SPS).
H... |
https://en.wikipedia.org/wiki/Program%20optimization | In computer science, program optimization, code optimization, or software optimization is the process of modifying a software system to make some aspect of it work more efficiently or use fewer resources. In general, a computer program may be optimized so that it executes more rapidly, or to make it capable of operatin... |
https://en.wikipedia.org/wiki/Boombox | A boombox is a transistorized portable music player featuring one or two cassette tape recorder/players and AM/FM radio, generally with a carrying handle. Beginning in the mid 1980s, a CD player was often included. Sound is delivered through an amplifier and two or more integrated loudspeakers. A boombox is a device ty... |
https://en.wikipedia.org/wiki/Vienna%20Circle | The Vienna Circle () of logical empiricism was a group of elite philosophers and scientists drawn from the natural and social sciences, logic and mathematics who met regularly from 1924 to 1936 at the University of Vienna, chaired by Moritz Schlick. The Vienna Circle had a profound influence on 20th-century philosophy,... |
https://en.wikipedia.org/wiki/Secondary%20metabolite | Secondary metabolites, also called specialised metabolites, toxins, secondary products, or natural products, are organic compounds produced by any lifeform, e.g. bacteria, fungi, animals, or plants, which are not directly involved in the normal growth, development, or reproduction of the organism. Instead, they general... |
https://en.wikipedia.org/wiki/Guido%20van%20Rossum | Guido van Rossum (; born 31 January 1956) is a Dutch programmer best known as the creator of the Python programming language, for which he was the "benevolent dictator for life" (BDFL) until he stepped down from the position on 12 July 2018. He remained a member of the Python Steering Council through 2019, and withdrew... |
https://en.wikipedia.org/wiki/Accumulation%20point | In mathematics, a limit point, accumulation point, or cluster point of a set in a topological space is a point that can be "approximated" by points of in the sense that every neighbourhood of with respect to the topology on also contains a point of other than itself. A limit point of a set does not itself have... |
https://en.wikipedia.org/wiki/Comparison%20of%20multi-paradigm%20programming%20languages | Programming languages can be grouped by the number and types of paradigms supported.
Paradigm summaries
A concise reference for the programming paradigms listed in this article.
Concurrent programming – have language constructs for concurrency, these may involve multi-threading, support for distributed computing, mes... |
https://en.wikipedia.org/wiki/Norton%27s%20theorem | In direct-current circuit theory, Norton's theorem, also called the Mayer–Norton theorem, is a simplification that can be applied to networks made of linear time-invariant resistances, voltage sources, and current sources. At a pair of terminals of the network, it can be replaced by a current source and a single resist... |
https://en.wikipedia.org/wiki/Th%C3%A9venin%27s%20theorem | As originally stated in terms of direct-current resistive circuits only, Thévenin's theorem states that "Any linear electrical network containing only voltage sources, current sources and resistances can be replaced at terminals by an equivalent combination of a voltage source in a series connection with a resistance... |
https://en.wikipedia.org/wiki/Pentagon%20%28computer%29 | The Pentagon (ru: Пентагон) home computer was a clone of the British-made Sinclair ZX Spectrum 128.
It was manufactured by amateurs in the former Soviet Union, following freely distributable documentation. Its PCB was copied all over the ex-USSR in 1991-1996, which made it a widespread ZX Spectrum clone.
The name "Pen... |
https://en.wikipedia.org/wiki/Finite%20mathematics | In mathematics education, Finite Mathematics is a syllabus in college and university mathematics that is independent of calculus. A course in precalculus may be a prerequisite for Finite Mathematics.
Contents of the course include an eclectic selection of topics often applied in social science and business, such as fi... |
https://en.wikipedia.org/wiki/Computer%20Go | Computer Go is the field of artificial intelligence (AI) dedicated to creating a computer program that plays the traditional board game Go. The field is sharply divided into two eras. Before 2015, the programs of the era were weak. The best efforts of the 1980s and 1990s produced only AIs that could be defeated by b... |
https://en.wikipedia.org/wiki/Superorganism | A superorganism or supraorganism is a group of synergetically interacting organisms of the same species. A community of synergetically interacting organisms of different species is called a holobiont.
Concept
The term superorganism is used most often to describe a social unit of eusocial animals, where division of la... |
https://en.wikipedia.org/wiki/Waverider | A waverider is a hypersonic aircraft design that improves its supersonic lift-to-drag ratio by using the shock waves being generated by its own flight as a lifting surface, a phenomenon known as compression lift.
The waverider remains a well-studied design for high-speed aircraft in the Mach 5 and higher hypersonic r... |
https://en.wikipedia.org/wiki/Dementia%20with%20Lewy%20bodies | Dementia with Lewy bodies (DLB) is a type of dementia characterized by changes in sleep, behavior, cognition, movement, and regulation of automatic bodily functions. Memory loss is not always an early symptom. The disease worsens over time and is usually diagnosed when cognitive impairment interferes with normal daily ... |
https://en.wikipedia.org/wiki/Projected%20coordinate%20system | A projected coordinate systemalso called a projected coordinate reference system, planar coordinate system, or grid reference systemis a type of spatial reference system that represents locations on Earth using Cartesian coordinates (x, y) on a planar surface created by a particular map projection. Each projected coord... |
https://en.wikipedia.org/wiki/Chandler%20wobble | The Chandler wobble or Chandler variation of latitude is a small deviation in the Earth's axis of rotation relative to the solid earth, which was discovered by and named after American astronomer Seth Carlo Chandler in 1891. It amounts to change of about in the point at which the axis intersects the Earth's surface an... |
https://en.wikipedia.org/wiki/Wilson%27s%20theorem | In algebra and number theory, Wilson's theorem states that a natural number n > 1 is a prime number if and only if the product of all the positive integers less than n is one less than a multiple of n. That is (using the notations of modular arithmetic), the factorial satisfies
exactly when n is a prime number. In o... |
https://en.wikipedia.org/wiki/Amiga%20Unix | Amiga Unix (informally known as Amix) is a discontinued full port of AT&T Unix System V Release 4 operating system developed by Commodore-Amiga, Inc. in 1990 for the Amiga computer family as an alternative to AmigaOS, which shipped by default.
Overview
Bundled with the Amiga 2500UX and Amiga 3000UX, Commodore's Unix w... |
https://en.wikipedia.org/wiki/Septum | In biology, a septum (Latin for something that encloses; : septa) is a wall, dividing a cavity or structure into smaller ones. A cavity or structure divided in this way may be referred to as septate.
Examples
Human anatomy
Interatrial septum, the wall of tissue that is a sectional part of the left and right atria of... |
https://en.wikipedia.org/wiki/Lennard-Jones%20potential | In computational chemistry, the Lennard-Jones potential (also termed the LJ potential or 12-6 potential; named for John Lennard-Jones) is an intermolecular pair potential. Out of all the intermolecular potentials, the Lennard-Jones potential is probably the one that has been the most extensively studied. It is consider... |
https://en.wikipedia.org/wiki/Rose%20hip | The rose hip or rosehip, also called rose haw and rose hep, is the accessory fruit of the various species of rose plant. It is typically red to orange, but ranges from dark purple to black in some species. Rose hips begin to form after pollination of flowers in spring or early summer, and ripen in late summer through a... |
https://en.wikipedia.org/wiki/Atomic%20force%20microscopy | Atomic force microscopy (AFM) or scanning force microscopy (SFM) is a very-high-resolution type of scanning probe microscopy (SPM), with demonstrated resolution on the order of fractions of a nanometer, more than 1000 times better than the optical diffraction limit.
Overview
Atomic force microscopy (AFM) is a type of... |
https://en.wikipedia.org/wiki/Stochastic%20calculus | Stochastic calculus is a branch of mathematics that operates on stochastic processes. It allows a consistent theory of integration to be defined for integrals of stochastic processes with respect to stochastic processes. This field was created and started by the Japanese mathematician Kiyosi Itô during World War II.
T... |
https://en.wikipedia.org/wiki/Viterbi%20algorithm | The Viterbi algorithm is a dynamic programming algorithm for obtaining the maximum a posteriori probability estimate of the most likely sequence of hidden states—called the Viterbi path—that results in a sequence of observed events, especially in the context of Markov information sources and hidden Markov models (HMM).... |
https://en.wikipedia.org/wiki/Stress%20%28mechanics%29 | In continuum mechanics, stress is a physical quantity that describes forces present during deformation. For example, an object being pulled apart, such as a stretched elastic band, is subject to tensile stress and may undergo elongation. An object being pushed together, such as a crumpled sponge, is subject to compress... |
https://en.wikipedia.org/wiki/Young%27s%20modulus | Young's modulus (or Young modulus) is a mechanical property of solid materials that measures the tensile or compressive stiffness when the force is applied lengthwise. It is the modulus of elasticity for tension or axial compression. Young's modulus is defined as the ratio of the stress (force per unit area) applied to... |
https://en.wikipedia.org/wiki/Remote%20sensing | Remote sensing is the acquisition of information about an object or phenomenon without making physical contact with the object, in contrast to in situ or on-site observation. The term is applied especially to acquiring information about Earth and other planets. Remote sensing is used in numerous fields, including geoph... |
https://en.wikipedia.org/wiki/Bernoulli%20polynomials | In mathematics, the Bernoulli polynomials, named after Jacob Bernoulli, combine the Bernoulli numbers and binomial coefficients. They are used for series expansion of functions, and with the Euler–MacLaurin formula.
These polynomials occur in the study of many special functions and, in particular, the Riemann zeta fun... |
https://en.wikipedia.org/wiki/Vanillin | Vanillin is an organic compound with the molecular formula . It is a phenolic aldehyde. Its functional groups include aldehyde, hydroxyl, and ether. It is the primary component of the extract of the vanilla bean. Synthetic vanillin is now used more often than natural vanilla extract as a flavoring in foods, beverag... |
https://en.wikipedia.org/wiki/Additive%20inverse | In mathematics, the additive inverse of a number (sometimes called the opposite of ) is the number that, when added to , yields zero. The operation taking a number to its additive inverse is known as sign change or negation. For a real number, it reverses its sign: the additive inverse (opposite number) of a positive ... |
https://en.wikipedia.org/wiki/Open%20formula | An open formula is a formula that contains at least one free variable.
An open formula does not have a truth value assigned to it, in contrast with a closed formula which constitutes a proposition and thus can have a truth value like true or false. An open formula can be transformed into a closed formula by applying a... |
https://en.wikipedia.org/wiki/Clock%20rate | In computing, the clock rate or clock speed typically refers to the frequency at which the clock generator of a processor can generate pulses, which are used to synchronize the operations of its components, and is used as an indicator of the processor's speed. It is measured in the SI unit of frequency hertz (Hz).
The... |
https://en.wikipedia.org/wiki/Disk%20controller | The disk controller is the controller circuit which enables the CPU to communicate with a hard disk, floppy disk or other kind of disk drive. It also provides an interface between the disk drive and the bus connecting it to the rest of the system.
Early disk controllers were identified by their storage methods and dat... |
https://en.wikipedia.org/wiki/SQL-Ledger | SQL-Ledger is an ERP and double entry accounting system. Accounting data is stored in an SQL database server and a standard web browser can be used as its user interface. The system uses the Perl language with a database interface module for processing and PostgreSQL for data storage which is the preferred platform. Th... |
https://en.wikipedia.org/wiki/Parazoa | Parazoa (Parazoa, gr. Παρα-, para, "next to", and ζωα, zoa, "animals") are a taxon with sub-kingdom category that is located at the base of the phylogenetic tree of the animal kingdom in opposition to the sub-kingdom Eumetazoa; they group together the most primitive forms, characterized by not having proper tissues or ... |
https://en.wikipedia.org/wiki/Suslin%27s%20problem | In mathematics, Suslin's problem is a question about totally ordered sets posed by and published posthumously.
It has been shown to be independent of the standard axiomatic system of set theory known as ZFC; showed that the statement can neither be proven nor disproven from those axioms, assuming ZF is consistent.
(... |
https://en.wikipedia.org/wiki/Climm |
climm (previously mICQ) is a free CLI-based instant messaging client that runs on a wide variety of platforms, including AmigaOS, BeOS, Windows (using either Cygwin or MinGW), OS X, NetBSD/OpenBSD/FreeBSD, Linux, Solaris, HP-UX, and AIX.
Functionality
climm has many of the features the official ICQ client has, and ... |
https://en.wikipedia.org/wiki/Propylene%20glycol | Propylene glycol (IUPAC name: propane-1,2-diol) is a viscous, colorless liquid, which is nearly odorless but possesses a faintly sweet taste. Its chemical formula is CH3CH(OH)CH2OH.
As it contains two alcohol groups, it is classed as a diol. It is miscible with a broad range of solvents, including water, acetone, and ... |
https://en.wikipedia.org/wiki/Old%20age | Old age is the range of ages for persons nearing and surpassing life expectancy. People of old age are also referred to as: old people, elderly, elders, seniors, senior citizens, or older adults.
Old age is not a definite biological stage: the chronological age denoted as "old age" varies culturally and historically.... |
https://en.wikipedia.org/wiki/Brooks%27s%20law | Brooks' law is an observation about software project management according to which adding more individuals to a software project that is behind schedule delays it even longer. It was coined by Fred Brooks in his 1975 book The Mythical Man-Month. According to Brooks, under certain conditions, an incremental person when ... |
https://en.wikipedia.org/wiki/Hobbyist%20operating%20system | The development of a hobbyist operating system is one of the more involved and technical options for a computer hobbyist.
The definition of a hobby operating system can sometimes be vague. It can be from the developer's view, where the developers do it just for fun or learning; it can also be seen from the user's view,... |
https://en.wikipedia.org/wiki/Propositional%20function | In propositional calculus, a propositional function or a predicate is a sentence expressed in a way that would assume the value of true or false, except that within the sentence there is a variable (x) that is not defined or specified (thus being a free variable), which leaves the statement undetermined. The sentence m... |
https://en.wikipedia.org/wiki/Q%20factor | In physics and engineering, the quality factor or Q factor is a dimensionless parameter that describes how underdamped an oscillator or resonator is. It is defined as the ratio of the initial energy stored in the resonator to the energy lost in one radian of the cycle of oscillation. Q factor is alternatively defined ... |
https://en.wikipedia.org/wiki/Domain%20of%20discourse | In the formal sciences, the domain of discourse, also called the universe of discourse, universal set, or simply universe, is the set of entities over which certain variables of interest in some formal treatment may range.
Overview
The domain of discourse is usually identified in the preliminaries, so that there is n... |
https://en.wikipedia.org/wiki/Broadcast%20range | A broadcast range (also listening range or listening area for radio, or viewing range or viewing area for television) is the service area that a broadcast station or other transmission covers via radio waves (or possibly infrared light, which is closely related). It is generally the area in which a station's signal st... |
https://en.wikipedia.org/wiki/Anomalous%20propagation | Anomalous propagation (sometimes shortened to anaprop or anoprop) includes different forms of radio propagation due to an unusual distribution of temperature and humidity with height in the atmosphere. While this includes propagation with larger losses than in a standard atmosphere, in practical applications it is most... |
https://en.wikipedia.org/wiki/Blanketing | Blanketing is a term used predominantly in the US to refer to receiver blocking, which is interference caused when a strong unwanted off-channel radio signal prevents the reception of another (wanted) transmission.
This problem is greatly reduced by even moderate-quality receivers, which have better selectivity (fil... |
https://en.wikipedia.org/wiki/Delta%20operator | In mathematics, a delta operator is a shift-equivariant linear operator on the vector space of polynomials in a variable over a field that reduces degrees by one.
To say that is shift-equivariant means that if , then
In other words, if is a "shift" of , then is also a shift of , and has the same "shifting vecto... |
https://en.wikipedia.org/wiki/Monge%20array | In mathematics applied to computer science, Monge arrays, or Monge matrices, are mathematical objects named for their discoverer, the French mathematician Gaspard Monge.
An m-by-n matrix is said to be a Monge array if, for all such that
one obtains
So for any two rows and two columns of a Monge array (a 2 × 2 sub-m... |
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