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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/Headroom%20%28photographic%20framing%29 | In photography and cinematography, headroom or head room is a concept of aesthetic composition that addresses the relative vertical position of the subject within the frame of the image. Headroom refers specifically to the distance between the top of the subject's head and the top of the frame, but the term is sometime... |
https://en.wikipedia.org/wiki/Generalized%20Pochhammer%20symbol | In mathematics, the generalized Pochhammer symbol of parameter and partition generalizes the classical Pochhammer symbol, named after Leo August Pochhammer, and is defined as
It is used in multivariate analysis. |
https://en.wikipedia.org/wiki/Benzene%20in%20soft%20drinks | Benzene in soft drinks is of potential concern due to the carcinogenic nature of the molecule. This contamination is a public health concern and has caused significant outcry among environmental and health advocates. Benzene levels are regulated in drinking water nationally and internationally, and in bottled water in ... |
https://en.wikipedia.org/wiki/Irrational%20number | In mathematics, the irrational numbers (from in- prefix assimilated to ir- (negative prefix, privative) + rational) are all the real numbers that are not rational numbers. That is, irrational numbers cannot be expressed as the ratio of two integers. When the ratio of lengths of two line segments is an irrational number... |
https://en.wikipedia.org/wiki/Phytochorion | A phytochorion, in phytogeography, is a geographic area with a relatively uniform composition of plant species. Adjacent phytochoria do not usually have a sharp boundary, but rather a soft one, a transitional area in which many species from both regions overlap. The region of overlap is called a vegetation tension zone... |
https://en.wikipedia.org/wiki/List%20of%20unnumbered%20minor%20planets | The following is a list of unnumbered minor planets in chronological order of their principal provisional designation. Contrary to their numbered counterparts, unnumbered minor planets have a poorly determined orbit due to insufficient observational data. This also includes lost minor planets which have not been observ... |
https://en.wikipedia.org/wiki/Proteinase%20K | In molecular biology, Proteinase K (, protease K, endopeptidase K, Tritirachium alkaline proteinase, Tritirachium album serine proteinase, Tritirachium album proteinase K) is a broad-spectrum serine protease. The enzyme was discovered in 1974 in extracts of the fungus Parengyodontium album (formerly Engyodontium albu... |
https://en.wikipedia.org/wiki/Outline%20of%20the%20human%20nervous%20system | The following diagram is provided as an overview of and topical guide to the human nervous system:
Human nervous system – the part of the human body that coordinates a person's voluntary and involuntary actions and transmits signals between different parts of the body. The human nervous system consists of two main par... |
https://en.wikipedia.org/wiki/Quasi-delay-insensitive%20circuit | In digital logic design, an asynchronous circuit is quasi delay-insensitive (QDI) when it operates correctly, independent of gate and wire delay with the weakest exception necessary to be turing-complete.
Overview
Pros
Robust to process variation, temperature fluctuation, circuit redesign, and FPGA remapping.
Natur... |
https://en.wikipedia.org/wiki/Kettle%20%28birds%29 | A kettle is a group of birds wheeling and circling in the air. The kettle may be composed of several different species at the same time. Nature photographer M. Timothy O'Keefe theorizes that the word derives from the appearance of birds circling tightly in a thermal updraft "like something boiling in a cauldron." Orni... |
https://en.wikipedia.org/wiki/Anomalous%20photovoltaic%20effect | The anomalous photovoltaic effect (APE) is a type of a photovoltaic effect which occurs in certain semiconductors and insulators. The "anomalous" refers to those cases where the photovoltage (i.e., the open-circuit voltage caused by the light) is larger than the band gap of the corresponding semiconductor. In some case... |
https://en.wikipedia.org/wiki/Flag%20of%20the%20Russian-American%20Company | The flag of the Russian-American Company, first adopted in 1806, consisted of a variation of the horizontal white-blue-red tricolor of the flag of Russia, but with the white stripe broader than the other two, and containing a double-headed eagle symbol of the company. The exact form and placement of the eagle was subj... |
https://en.wikipedia.org/wiki/Glyceraldehyde%203-phosphate | Glyceraldehyde 3-phosphate, also known as triose phosphate or 3-phosphoglyceraldehyde and abbreviated as G3P, GA3P, GADP, GAP, TP, GALP or PGAL, is a metabolite that occurs as an intermediate in several central pathways of all organisms. With the chemical formula H(O)CCH(OH)CH2OPO32-, this anion is a monophosphate este... |
https://en.wikipedia.org/wiki/Hungarian%20notation | Hungarian notation is an identifier naming convention in computer programming in which the name of a variable or function indicates its intention or kind, or in some dialects, its type. The original Hungarian notation uses only intention or kind in its naming convention and is sometimes called Apps Hungarian as it beca... |
https://en.wikipedia.org/wiki/Genetically%20modified%20vaccine | Most vaccines consist of viruses that have been attenuated, disabled, weakened or killed in some way so that their virulent properties are no longer effective. A simple
genetically modified vaccine, based on a thymidine kinase deficient mutant of pseudorabies virus was reportedly available as early as 2001 as a commerc... |
https://en.wikipedia.org/wiki/Thermophyte | Thermophyte (Greek thérmos = warmth, heat + phyton = plant) is an organism which is tolerant or thriving at high temperatures. These organisms are categorized according to ecological valences at high temperatures, including biological extremely. Such organisms included the hot-spring taxa also.
A large amount of the... |
https://en.wikipedia.org/wiki/Hyphen-minus | The hyphen-minus is the most commonly used type of hyphen, widely used in digital documents. In ASCII or on most keyboards it is the only character that resembles a minus sign or a dash so it is also used for these. The name "hyphen-minus" derives from the original ASCII standard, where it was called "hyphen–(minus)".... |
https://en.wikipedia.org/wiki/Weak%20symbol | A weak symbol denotes a specially annotated symbol during linking of Executable and Linkable Format (ELF) object files. By default, without any annotation, a symbol in an object file is strong. During linking, a strong symbol can override a weak symbol of the same name. In contrast, in the presence of two strong symbo... |
https://en.wikipedia.org/wiki/Douady%E2%80%93Earle%20extension | In mathematics, the Douady–Earle extension, named after Adrien Douady and Clifford Earle, is a way of extending homeomorphisms of the unit circle in the complex plane to homeomorphisms of the closed unit disk, such that the extension is a diffeomorphism of the open disk. The extension is analytic on the open disk. The... |
https://en.wikipedia.org/wiki/Craterellus%20lutescens | Craterellus lutescens, formerly sometimes called Cantharellus lutescens or Cantharellus xanthopus or Cantharellus aurora, commonly known as Yellow Foot, is a species of mushroom. It is closely related to Craterellus tubaeformis. Its hymenium is usually orange or white, whereas the hymenium of C. tubaeformis is grey. ... |
https://en.wikipedia.org/wiki/Hemorphin-4 | Hemorphin-4 is an endogenous opioid peptide of the hemorphin family which possesses antinociceptive properties and is derived from the β-chain of hemoglobin in the bloodstream. It is a tetrapeptide with the amino acid sequence Tyr-Pro-Trp-Thr. Hemorphin-4 has affinities for the μ-, δ-, and κ-opioid receptors that are i... |
https://en.wikipedia.org/wiki/WarpOS | WarpOS is a multitasking kernel for the PowerPC (PPC) architecture central processing unit (CPU) developed by Haage & Partner for the Amiga computer platform in the late 1990s and early 2000s. It runs on PowerUP accelerator boards developed by phase5 which contains both a Motorola 68000 series CPU and a PowerPC CPU wit... |
https://en.wikipedia.org/wiki/Silicon%20quantum%20dot | Silicon quantum dots are metal-free biologically compatible quantum dots with photoluminescence emission maxima that are tunable through the visible to near-infrared spectral regions. These quantum dots have unique properties arising from their indirect band gap, including long-lived luminescent excited-states and larg... |
https://en.wikipedia.org/wiki/History%20of%20the%20present%20illness | Following the chief complaint in medical history taking, a history of the present illness (abbreviated HPI) (termed history of presenting complaint (HPC) in the UK) refers to a detailed interview prompted by the chief complaint or presenting symptom (for example, pain).
Questions to include
Different sources include d... |
https://en.wikipedia.org/wiki/Ambiguity%20aversion | In decision theory and economics, ambiguity aversion (also known as uncertainty aversion) is a preference for known risks over unknown risks. An ambiguity-averse individual would rather choose an alternative where the probability distribution of the outcomes is known over one where the probabilities are unknown. This b... |
https://en.wikipedia.org/wiki/Chord%20%28peer-to-peer%29 | In computing, Chord is a protocol and algorithm for a peer-to-peer distributed hash table. A distributed hash table stores key-value pairs by assigning keys to different computers (known as "nodes"); a node will store the values for all the keys for which it is responsible. Chord specifies how keys are assigned to node... |
https://en.wikipedia.org/wiki/Secure%20Communications%20Interoperability%20Protocol | The Secure Communications Interoperability Protocol (SCIP) is a US standard for secure voice and data communication, for circuit-switched one-to-one connections, not packet-switched networks. SCIP derived from the US Government Future Narrowband Digital Terminal (FNBDT) project.
SCIP supports a number of different mo... |
https://en.wikipedia.org/wiki/Xunlei | Xunlei Limited () is a Chinese multinational technology company and an online service provider founded in 2003. The subsidiary of Xunlei Limited, Shenzhen Xunlei Networking Technologies, Co., Ltd. () was formerly known as Sandai Technologies (Shenzhen) Inc. and changed its name to Shenzhen Xunlei Networking Technologie... |
https://en.wikipedia.org/wiki/EPrivacy%20Directive | Privacy and Electronic Communications Directive 2002/58/EC on Privacy and Electronic Communications, otherwise known as ePrivacy Directive (ePD), is an EU directive on data protection and privacy in the digital age. It presents a continuation of earlier efforts, most directly the Data Protection Directive. It deals wit... |
https://en.wikipedia.org/wiki/Maynard%20Electronics | Maynard Electronics was an American company based in Lake Mary, Florida that produced magnetic tape data storage related products.
The company was founded by Kim and Alison Knapp in 1982. It was acquired by Archive Corp. in 1989, but the brand was maintained. In order to make it easier to sell tape drives, the compa... |
https://en.wikipedia.org/wiki/Thermodynamic%20operation | A thermodynamic operation is an externally imposed manipulation that affects a thermodynamic system. The change can be either in the connection or wall between a thermodynamic system and its surroundings, or in the value of some variable in the surroundings that is in contact with a wall of the system that allows trans... |
https://en.wikipedia.org/wiki/Wave%20maps%20equation | In mathematical physics, the wave maps equation is a geometric wave equation that solves
where is a connection.
It can be considered a natural extension of the wave equation for Riemannian manifolds. |
https://en.wikipedia.org/wiki/Dendropyrochronology | Dendropyrochronology is the science of using tree-ring dating to study and reconstruct the history of wild fires. It is a subfield of dendrochronology, along with dendroclimatology and dendroarchaeology.
See also
Dendroclimatology
Dendroarchaeology |
https://en.wikipedia.org/wiki/BlazBlue%3A%20Chrono%20Phantasma | BlazBlue: Chrono Phantasma, released in Japan as BlazBlue: Chronophantasma, is a 2-D fighting game developed by Arc System Works. It is the third game of the Blazblue series, set after the events of BlazBlue: Continuum Shift. The game was originally to be released first as an arcade game in the early fourth quarter of ... |
https://en.wikipedia.org/wiki/Process%20ontology | In philosophy, a process ontology refers to a universal model of the structure of the world as an ordered wholeness. Such ontologies are fundamental ontologies, in contrast to the so-called applied ontologies. Fundamental ontologies do not claim to be accessible to any empirical proof in itself but to be a structural d... |
https://en.wikipedia.org/wiki/One-place%20study | One-place studies are a branch of family history and/or local history with a focus on the entire population of a single road, village or community, not just a single, geographically dispersed family line.
Introduction
In the course of a one-place study, a prime objective is to transcribe the registers of christenings,... |
https://en.wikipedia.org/wiki/Eco-sufficiency | Ecological sufficiency, or simply sufficiency, refers to the concept or strategy to reduce the environmental footprint of societies through moderating the need for energy, carbon and material-based services and products. The term was popularised by authors such as Thomas Princen, a professor at MIT, in his 2005 book ‘T... |
https://en.wikipedia.org/wiki/Cookie%20Puss | Cookie Puss is an ice cream cake character created by Carvel in the 1970s as an expansion of its line of freshly made exclusive products, along with Hug Me the Bear and Fudgie the Whale. The cake is fashioned with a clown face that uses cookies for eyes and an ice cream cone for the nose. According to Carvel's backstor... |
https://en.wikipedia.org/wiki/Mathieu%20wavelet | The Mathieu equation is a linear second-order differential equation with periodic coefficients. The French mathematician, E. Léonard Mathieu, first introduced this family of differential equations, nowadays termed Mathieu equations, in his “Memoir on vibrations of an elliptic membrane” in 1868. "Mathieu functions are a... |
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/Conidiomata | Conidiomata (singular: Conidioma) are blister-like fruiting structures produced by a specific type of fungus called a coelomycete. They are formed as a means of dispersing asexual spores call conidia, which they accomplish by creating the blister-like formations which then rupture to release the contained spores.
Stru... |
https://en.wikipedia.org/wiki/Zero-phonon%20line%20and%20phonon%20sideband | The zero-phonon line and the phonon sideband jointly constitute the line shape of individual light absorbing and emitting molecules (chromophores) embedded into a transparent solid matrix. When the host matrix contains many chromophores, each will contribute a zero-phonon line and a phonon sideband to the absorption an... |
https://en.wikipedia.org/wiki/Statutory%20liquidity%20ratio | In India, the Statutory liquidity ratio (SLR) is the Government term for the reserve requirement that commercial banks are required to maintain in the form of cash, gold reserves,Govt. bonds and other Reserve Bank of India (RBI)- approved securities before providing credit to the customers. The SLR to be maintained by ... |
https://en.wikipedia.org/wiki/Nonlimiting%20water%20range | The non-limiting water range (NLWR) represents the range of water content in the soil where limitations to plant growth (such as water potential, air-filled porosity, or soil strength) are minimal. John Letey (1985) from UC Riverside introduced the NLWR concept in an attempt to integrate several physical properties ass... |
https://en.wikipedia.org/wiki/CMS%20Enhancements | CMS Enhancements Inc. (originally Complete Management Systems) was an American computer company headquartered in Irvine, California. Founded in 1983, the company's main product lines in the 1980s were internal and external hard drives and tape drives. The company's hard drives were chiefly sourced from Seagate and reco... |
https://en.wikipedia.org/wiki/AirPort%20Time%20Capsule | The AirPort Time Capsule (originally named Time Capsule) is a wireless router which was sold by Apple Inc., featuring network-attached storage (NAS) and a residential gateway router, and is one of Apple's AirPort products. They are, essentially, versions of the AirPort Extreme with an internal hard drive. Apple describ... |
https://en.wikipedia.org/wiki/Social%20history%20of%20viruses | The social history of viruses describes the influence of viruses and viral infections on human history. Epidemics caused by viruses began when human behaviour changed during the Neolithic period, around 12,000 years ago, when humans developed more densely populated agricultural communities. This allowed viruses to spre... |
https://en.wikipedia.org/wiki/Eigenoperator | In mathematics, an eigenoperator, A, of a matrix H is a linear operator such that
where is a corresponding scalar called an eigenvalue. |
https://en.wikipedia.org/wiki/Histogram%20matching | In image processing, histogram matching or histogram specification is the transformation of an image so that its histogram matches a specified histogram. The well-known histogram equalization method is a special case in which the specified histogram is uniformly distributed.
It is possible to use histogram matching to... |
https://en.wikipedia.org/wiki/Zinc%20bis%28dimethyldithiocarbamate%29 | Zinc dimethyldithiocarbamate is a coordination complex of zinc with dimethyldithiocarbamate. It is a pale yellow solid that is used as a fungicide, the sulfur vulcanization of rubber, and other industrial applications.
Applications
Known as ziram in agriculture, it was introduced in the United States in 1960 as a bro... |
https://en.wikipedia.org/wiki/Surface%20differential%20reflectivity | Surface differential reflectivity (SDR) or differential reflectance spectroscopy (DRS) is a spectroscopic technique that measures and compares the reflectivity of a sample in two different physical conditions (modulation spectroscopy). The result is presented in terms of ΔR/R, which is defined as follow:
where R1 and ... |
https://en.wikipedia.org/wiki/Alfred%20Hershey | Alfred Day Hershey (December 4, 1908 – May 22, 1997) was an American Nobel Prize–winning bacteriologist and geneticist.
He was born in Owosso, Michigan and received his B.S. in chemistry at Michigan State University in 1930 and his Ph.D. in bacteriology in 1934, taking a position shortly thereafter at the Department o... |
https://en.wikipedia.org/wiki/Coracoclavicular%20ligament | The coracoclavicular ligament is a ligament of the shoulder. It connects the clavicle to the coracoid process of the scapula.
Structure
The coracoclavicular ligament connects the clavicle to the coracoid process of the scapula. It is not part of the acromioclavicular joint articulation, but is usually described with ... |
https://en.wikipedia.org/wiki/BioSimGrid | BioSimGrid was a project to make data sets from computer simulations in the field of modelling biological systems, particularly biomolecular structures, more accessible to researchers. The project began in 2004 and halted by 2009.
In 2004 designers presented the concept of the project as a "protein data bank extended ... |
https://en.wikipedia.org/wiki/Afrogarypus%20seychellesensis | Afrogarypus seychellesensis is a species of pseudoscorpions that is endemic to Praslin in the Seychelles. It is only known from its type specimen, and has not been seen since. If it is still extant, it would be threatened by the habitat deterioration caused by invasive plants. |
https://en.wikipedia.org/wiki/John%20Riordan%20%28mathematician%29 | John Francis Riordan (April 22, 1903 – August 27, 1988) was an American mathematician and the author of major early works in combinatorics, particularly Introduction to Combinatorial Analysis and Combinatorial Identities.
Biography
Riordan was a graduate of Yale University. In his early life he wrote a number of poem... |
https://en.wikipedia.org/wiki/Backup%20battery | A backup battery provides power to a system when the primary source of power is unavailable. Backup batteries range from small single cells to retain clock time and date in computers, up to large battery room facilities that power uninterruptible power supply systems for large data centers. Small backup batteries may ... |
https://en.wikipedia.org/wiki/Distributive%20category | In mathematics, a category is distributive if it has finite products and finite coproducts and such that for every choice of objects , the canonical map
is an isomorphism, and for all objects , the canonical map is an isomorphism (where 0 denotes the initial object). Equivalently, if for every object the endofunc... |
https://en.wikipedia.org/wiki/Gas | Gas is one of the four fundamental states of matter. The others are solid, liquid, and plasma.
A pure gas may be made up of individual atoms (e.g. a noble gas like neon), elemental molecules made from one type of atom (e.g. oxygen), or compound molecules made from a variety of atoms (e.g. carbon dioxide). A gas mixtur... |
https://en.wikipedia.org/wiki/Fecal%20plug | A fecal plug (occasionally known as a tappen) is a large mass of hardened feces produced by a bear during its winter hibernation. The plug forms in the colon, and consists of a variety of materials ingested by the bear during and immediately before hibernating.
Some of the fecal plug's material is composed of undigest... |
https://en.wikipedia.org/wiki/Bach%20tensor | In differential geometry and general relativity, the Bach tensor is a trace-free tensor of rank 2 which is conformally invariant in dimension . Before 1968, it was the only known conformally invariant tensor that is algebraically independent of the Weyl tensor. In abstract indices the Bach tensor is given by
where is... |
https://en.wikipedia.org/wiki/VMScluster | A VMScluster, originally known as a VAXcluster, is a computer cluster involving a group of computers running the OpenVMS operating system. Whereas tightly coupled multiprocessor systems run a single copy of the operating system, a VMScluster is loosely coupled: each machine runs its own copy of OpenVMS, but the disk st... |
https://en.wikipedia.org/wiki/Elmer%20Belt%20Library%20of%20Vinciana | The Elmer Belt Library of Vinciana is a special collection at the University of California, Los Angeles which focuses on Leonardo da Vinci life, art, thought, and enduring cultural influence. It is the most extensive research collection concerning Leonardo in the United States. It was donated to UCLA in several install... |
https://en.wikipedia.org/wiki/Fiber%20%28mathematics%29 | In mathematics, the term fiber (US English) or fibre (British English) can have two meanings, depending on the context:
In naive set theory, the fiber of the element in the set under a map is the inverse image of the singleton under
In algebraic geometry, the notion of a fiber of a morphism of schemes must be d... |
https://en.wikipedia.org/wiki/International%20Meridian%20Conference | The International Meridian Conference was a conference held in October 1884 in Washington, D.C., in the United States, to determine a prime meridian for international use. The conference was held at the request of U.S. President Chester A. Arthur. The subject to discuss was the choice of "a meridian to be employed as ... |
https://en.wikipedia.org/wiki/Burns%20%26%20Wilcox | Burns & Wilcox is an independent insurance wholesale broker and managing underwriter founded in 1969 by Herbert W. Kaufman. Its corporate headquarters is located in Farmington Hills, Michigan. Burns & Wilcox, previously a public company, is family run with Kaufman's son Alan Jay Kaufman serving as chairman, president, ... |
https://en.wikipedia.org/wiki/List%20of%20Papua%20New%20Guinean%20flags | This is a list of flags used in Papua New Guinea.
National flag
Flag of the Governor-General
Ensigns
Provincial flags
Historical flags
Foreign Powers' Flags
Royal flags
National flags
Viceregal flags
Sporting flags
Proposed flags
See also
Notes |
https://en.wikipedia.org/wiki/Bounded%20set | In mathematical analysis and related areas of mathematics, a set is called bounded if it is, in a certain sense, of finite measure. Conversely, a set which is not bounded is called unbounded. The word "bounded" makes no sense in a general topological space without a corresponding metric.
Boundary is a distinct concept... |
https://en.wikipedia.org/wiki/Butter%20Brickle | Butter Brickle is a chocolate-coated toffee first sold on November 20, 1924 by candy manufacturer John G. Woodward Co. of Council Bluffs, Iowa, and toffee pieces for flavoring ice cream, manufactured by The Fenn Bros. Ice Cream and Candy Co. of Sioux Falls, South Dakota.
John G. Woodward & Co.
Butter Brickle was first... |
https://en.wikipedia.org/wiki/Mohammad%20Fahim%20Dashty | Mohammad Fahim Dashty ( 1973 – 4 or 5 September 2021) was an Afghan journalist, politician and military official. In 2021, he served as spokesman of the National Resistance Front of Afghanistan during the Republican insurgency in Afghanistan.
Biography
Born around 1973, Dashty was the nephew of Afghan politician, Abdu... |
https://en.wikipedia.org/wiki/Method%20of%20images | The method of images (or method of mirror images) is a mathematical tool for solving differential equations, in which the domain of the sought function is extended by the addition of its mirror image with respect to a symmetry hyperplane. As a result, certain boundary conditions are satisfied automatically by the prese... |
https://en.wikipedia.org/wiki/Upload | Uploading refers to transmitting data from one computer system to another through means of a network. Common methods of uploading include: uploading via web browsers, FTP clients], and terminals (SCP/SFTP). Uploading can be used in the context of (potentially many) clients that send files to a central server. While upl... |
https://en.wikipedia.org/wiki/Ultragraph%20C%2A-algebra | In mathematics, an ultragraph C*-algebra is a universal C*-algebra generated by partial isometries on a collection of Hilbert spaces constructed from ultragraphs.pp. 6-7. These C*-algebras were created in order to simultaneously generalize the classes of graph C*-algebras and Exel–Laca algebras, giving a unified framew... |
https://en.wikipedia.org/wiki/DySPAN | The Dynamic Spectrum Access Networks Standards Committee (DySPAN-SC), formerly Standards Coordinating Committee 41 (SCC41), and even earlier the IEEE P1900 Standards Committee, is sponsored by the Institute of Electrical and Electronics Engineers (IEEE). The group develops standards for radio and spectrum management. ... |
https://en.wikipedia.org/wiki/Weyl%27s%20inequality | In linear algebra, Weyl's inequality is a theorem about the changes to eigenvalues of an Hermitian matrix that is perturbed. It can be used to estimate the eigenvalues of a perturbed Hermitian matrix.
Weyl's inequality about perturbation
Let and be n×n Hermitian matrices, with their respective eigenvalues ordered... |
https://en.wikipedia.org/wiki/Girih%20tiles | Girih tiles are a set of five tiles that were used in the creation of Islamic geometric patterns using strapwork (girih) for decoration of buildings in Islamic architecture. They have been used since about the year 1200 and their arrangements found significant improvement starting with the Darb-i Imam shrine in Isfahan... |
https://en.wikipedia.org/wiki/Strength%20of%20evidence | In biostatistics, strength of evidence is the strength of a conducted study that can be assessed in health care interventions, e.g. to identify effective health care programs and evaluate the quality of the research in health care. It can be graded with different descriptive or analytical statistical methods. Hierarchy... |
https://en.wikipedia.org/wiki/Schur%20class | In complex analysis, the Schur class is the set of holomorphic functions defined on the open unit disk and satisfying . Named after Issai Schur the Schur class plays an important role in classical moment and interpolation problems.
Schur function
Consider the Carathéodory function of a unique probability measure ... |
https://en.wikipedia.org/wiki/Eisbein | Eisbein (literally: 'ice bone') is a German culinary dish of ham hock, usually cured and slightly boiled. The German-language name has associations with the practice of using a pig's leg-bone for ice skating. In southern parts of Germany, the common preparation is known as Schweinshaxe, and it is usually roasted. The... |
https://en.wikipedia.org/wiki/Q-Hahn%20polynomials | In mathematics, the q-Hahn polynomials are a family of basic hypergeometric orthogonal polynomials in the basic Askey scheme. give a detailed list of their properties.
Definition
The polynomials are given in terms of basic hypergeometric functions by
Relation to other polynomials
q-Hahn polynomials→ Quantum q... |
https://en.wikipedia.org/wiki/Suicide%20of%20Jacintha%20Saldanha | Jacintha Saldanha (1966 – 7 December 2012) was an Indian nurse who worked at King Edward VII's Hospital in the City of Westminster, London. On 7 December 2012, she was found dead by suicide, three days after falling for a prank phone call as part of a radio stunt. In the prank call, the hosts of the Australian radio pr... |
https://en.wikipedia.org/wiki/Toilet%20roll%20holder | A toilet-roll holder, also known as a toilet paper dispenser, is an item that holds a roll of toilet paper. Common models include a hinged length of wire mounted horizontally on a wall, a thicker axle either recessed into a wall or mounted on a frame, or a freestanding vertical pole on a base. In recent years, automat... |
https://en.wikipedia.org/wiki/Delivery%20Bar%20Code%20Sorter | A Delivery Bar Code Sorter (DBCS) is a mail sorting machine used primarily by the United States Postal Service. Introduced in 1990, these machines sort letters at a rate of approximately 36,000 pieces per hour, with a 99% accuracy rate. A computer scans the addresses of the mail, and sorts it to one of up to 286 pocket... |
https://en.wikipedia.org/wiki/Index%20set | In mathematics, an index set is a set whose members label (or index) members of another set. For instance, if the elements of a set may be indexed or labeled by means of the elements of a set , then is an index set. The indexing consists of a surjective function from onto , and the indexed collection is typically ca... |
https://en.wikipedia.org/wiki/Teleport%20%28software%29 | Teleport is an open-source tool for providing zero trust access to servers and cloud applications using SSH, Kubernetes and HTTPS. It can eliminate the need for VPNs by providing a single gateway to access computing infrastructure via SSH, Kubernetes clusters, and cloud applications via a built-in proxy.
Teleport star... |
https://en.wikipedia.org/wiki/Milky%20seas%20effect | Milky seas (Somali: Kaluunka iftiima; English: Milky seas), also called mareel, is a luminous phenomenon in the ocean in which large areas of seawater (up to ) appear to glow translucently (in varying shades of blue). Such occurrences glow brightly enough at night to be visible from satellites orbiting Earth.
Mariners... |
https://en.wikipedia.org/wiki/Paping | Paping (pronounced pah ping) is a computer network administration utility used to test the reachability of a host on an Internet Protocol (TCP/IP) network and to measure the time it takes to connect to a specified port. The name is a play on the word ping, another computer network administration utility.
Because ICMP... |
https://en.wikipedia.org/wiki/Citizen%20Lab | The Citizen Lab is an interdisciplinary laboratory based at the Munk School of Global Affairs at the University of Toronto, Canada. It was founded by Ronald Deibert in 2001. The laboratory studies information controls that impact the openness and security of the Internet and that pose threats to human rights. The organ... |
https://en.wikipedia.org/wiki/Liberty%20%28personification%29 | The concept of liberty has frequently been represented by personifications, often loosely shown as a female classical goddess. Examples include Marianne, the national personification of the French Republic and its values of , the female Liberty portrayed on United States coins for well over a century, and many others. ... |
https://en.wikipedia.org/wiki/Zhu%20algebra | In the theory of vertex algebras, the Zhu algebra and the closely related C2-algebra are two associative algebras canonically constructed from a given vertex operator algebra. Many important representation theoretic properties of the vertex algebra are logically related to properties of its Zhu algebra or C2-algebra.
... |
https://en.wikipedia.org/wiki/Dual%20basis | In linear algebra, given a vector space with a basis of vectors indexed by an index set (the cardinality of is the dimension of ), the dual set of is a set of vectors in the dual space with the same index set I such that and form a biorthogonal system. The dual set is always linearly independent but does not n... |
https://en.wikipedia.org/wiki/R.%20Duncan%20Luce | Robert Duncan Luce (May 16, 1925 – August 11, 2012) was an American mathematician and social scientist, and one of the most preeminent figures in the field of mathematical psychology. At the end of his life, he held the position of Distinguished Research Professor of Cognitive Science at the University of California, I... |
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/Problem%20frames%20approach | Problem analysis or the problem frames approach is an approach to software requirements analysis. It was developed by British software consultant Michael A. Jackson in the 1990s.
History
The problem frames approach was first sketched by Jackson in his book Software Requirements & Specifications (1995) and in a number... |
https://en.wikipedia.org/wiki/Carbon-based%20life | Carbon is a primary component of all known life on Earth, representing approximately 45–50% of all dry biomass. Carbon compounds occur naturally in great abundance on Earth. Complex biological molecules consist of carbon atoms bonded with other elements, especially oxygen and hydrogen and frequently also nitrogen, phos... |
https://en.wikipedia.org/wiki/Department%20of%20Aerospace%20Science%20and%20Technology | The Brazilian Department of Science and Aerospace Technology (; DCTA) is the national military research center for aviation and space flight. It is subordinated to the Brazilian Air Force (FAB).
It coordinates all technical and scientific activities related to the aerospace sector in which there are interests by the M... |
https://en.wikipedia.org/wiki/Phosphopantetheine | Phosphopantetheine, also known as 4'-phosphopantetheine, is a prosthetic group of several acyl carrier proteins including the acyl carrier proteins (ACP) of fatty acid synthases, ACPs of polyketide synthases, the peptidyl carrier proteins (PCP), as well as aryl carrier proteins (ArCP) of nonribosomal peptide synthetase... |
https://en.wikipedia.org/wiki/Twistor%20memory | Twistor memory is a form of computer memory formed by wrapping magnetic tape around a current-carrying wire. Operationally, twistor was very similar to core memory. Twistor could also be used to make ROM memories, including a re-programmable form known as piggyback twistor. Both forms were able to be manufactured using... |
https://en.wikipedia.org/wiki/Bracket | A bracket, as used in British English, is either of two tall fore- or back-facing punctuation marks commonly used to isolate a segment of text or data from its surroundings. Typically deployed in symmetric pairs, an individual bracket may be identified as a 'left' or 'right' bracket or, alternatively, an "opening brack... |
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