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V/STOL
A vertical and/or short take-off and landing (V/STOL) aircraft is an airplane able to take-off or land vertically or on short runways. Vertical takeoff and landing (VTOL) aircraft are a subset of V/STOL craft that do not require runways at all. Generally, a V/STOL aircraft needs to be able to hover. Helicopters are not...
Blade
A blade is the portion of a tool, weapon, or machine with an edge that is designed to puncture, chop, slice or scrape surfaces or materials. Blades are typically made from materials that are harder than those they are to be used on. Historically, humans have made blades from flaking stones such as flint or obsidian, an...
Telomerase RNA component
Telomerase RNA component, also known as TR, TER or TERC, is an ncRNA found in eukaryotes that is a component of telomerase, the enzyme used to extend telomeres. TERC serves as a template for telomere replication (reverse transcription) by telomerase. Telomerase RNAs differ greatly in sequence and structure between vert...
Creation and annihilation operators
Creation operators and annihilation operators are mathematical operators that have widespread applications in quantum mechanics, notably in the study of quantum harmonic oscillators and many-particle systems. An annihilation operator (usually denoted a^ ) lowers the number of particles in a given state by one. A creat...
Unified interoperability
Unified interoperability is the property of a system that allows for the integration of real-time and non-real time communications, activities, data, and information services (i.e., unified) and the display and coordination of those services across systems and devices (i.e., interoperability). Unified interoperability ...
ROYGBIV
ROYGBIV is an acronym for the sequence of hues commonly described as making up a rainbow: red, orange, yellow, green, blue, indigo, and violet. There are several mnemonics that can be used for remembering this color sequence, such as the name "Roy G. Biv" or sentences such as "Richard of York Gave Battle in Vain".
Complex hyperbolic space
In mathematics, hyperbolic complex space is a Hermitian manifold which is the equivalent of the real hyperbolic space in the context of complex manifolds. The complex hyperbolic space is a Kähler manifold, and it is characterised by being the only simply connected Kähler manifold whose holomorphic sectional curvature i...
Thyroid ima artery
The thyroid ima artery (thyroidea ima artery, arteria thyroidea ima, thyroid artery of Neubauer or the lowest thyroid artery) is an artery of the head and neck. It is an anatomical variant that, when present, supplies blood to the thyroid gland primarily, or the trachea, the parathyroid gland and the thymus gland (as t...
Numerical linear algebra
Numerical linear algebra, sometimes called applied linear algebra, is the study of how matrix operations can be used to create computer algorithms which efficiently and accurately provide approximate answers to questions in continuous mathematics. It is a subfield of numerical analysis, and a type of linear algebra. Co...
Daisy grubber
A daisy grubber is a garden tool that is used to pull out roots. It is effective because it can pull out deep roots yet cause little or no disturbance to the surrounding soil.
Hutchinson Patent Stopper
Charles G. Hutchinson invented and patented the Hutchinson Patent Stopper in 1879 as a replacement for cork bottle stoppers which were commonly used as stoppers on soda water or pop bottles. His invention employed a wire spring attached to a rubber seal. Production of these stoppers was discontinued after 1912.
Planar lightwave circuit interferometer
An interferometer is an optical measuring device using the principle of light waves canceling and reinforcing each other. Interferometers are typically used to accurately measure distances. Planar lightwave circuits are either optical integrated circuits (ICs) or optical circuit boards made using the same manufacturing...
Typing
Typing is the process of writing or inputting text by pressing keys on a typewriter, computer keyboard, mobile phone, or calculator. It can be distinguished from other means of text input, such as handwriting and speech recognition. Text can be in the form of letters, numbers and other symbols. The world's first typist...
Digital Combat Simulator
Digital Combat Simulator, or DCS, is a combat flight simulation game developed primarily by Eagle Dynamics and The Fighter Collection.
Temgicoluril
Temgicoluril (INN), also known as tetramethylglycoluril and sold under the brand names Adaptol and Mebicar, is an anxiolytic medication produced by Latvian pharmaceutical company Olainfarm and sold in Latvia and Russia.The chemical structure of temgicoluril is similar to metabolites in human body and it doesn't interac...
Keller's conjecture
In geometry, Keller's conjecture is the conjecture that in any tiling of n-dimensional Euclidean space by identical hypercubes, there are two hypercubes that share an entire (n − 1)-dimensional face with each other. For instance, in any tiling of the plane by identical squares, some two squares must share an entire edg...
Angiostatin
Angiostatin is a naturally occurring protein found in several animal species, including humans. It is an endogenous angiogenesis inhibitor (i.e., it blocks the growth of new blood vessels). Clinical trials have been undertaken for its use in anticancer therapy.
Skylake (microarchitecture)
Skylake is Intel's codename for its sixth generation Core microprocessor family that was launched on August 5, 2015, succeeding the Broadwell microarchitecture. Skylake is a microarchitecture redesign using the same 14 nm manufacturing process technology as its predecessor, serving as a tock in Intel's tick–tock manufa...
Restricted power series
In algebra, the ring of restricted power series is the subring of a formal power series ring that consists of power series whose coefficients approach zero as degree goes to infinity. Over a non-archimedean complete field, the ring is also called a Tate algebra. Quotient rings of the ring are used in the study of a for...
I²C
I2C (Inter-Integrated Circuit; pronounced as “eye-squared-C”), alternatively known as I2C or IIC, is a synchronous, multi-master/multi-slave (controller/target), packet switched, single-ended, serial communication bus invented in 1982 by Philips Semiconductors. It is widely used for attaching lower-speed peripheral ICs...
Nik-L-Nip
Nik-L-Nip is a brand of confectionery created by Vinny Cavallo in the early 20th century that comes in a variety of fruit flavors, marketed by Tootsie Roll Industries. The Nik-L-Nip brand name is a combination of the original cost (a nickel, $0.05) and the preferred method of opening wax bottles, which is to nip (bite...
Hive management
Hive management in beekeeping refers to intervention techniques that a beekeeper may perform to ensure hive survival and to maximize hive production. Hive management techniques vary widely depending on the objectives.
Homogeneity (physics)
In physics, a homogeneous material or system has the same properties at every point; it is uniform without irregularities. A uniform electric field (which has the same strength and the same direction at each point) would be compatible with homogeneity (all points experience the same physics). A material constructed wit...
Marbled meat
Marbled meat is meat, especially red meat, that contains various amounts of intramuscular fat, giving it an appearance similar to marble.
Endocrine and Metabolic Diseases Information Service
The Endocrine and Metabolic Diseases Information Service is an information dissemination service of the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). The NIDDK is part of the National Institutes of Health, which is part of the U.S. Department of Health and Human Services. The Endocrine and M...
Dragon kill points
Dragon kill points or DKP are a semi-formal score-keeping system (loot system) used by guilds in massively multiplayer online games. Players in these games are faced with large scale challenges, or raids, which may only be surmounted through the concerted effort of dozens of players at a time. While many players may be...
Iterative Viterbi decoding
Iterative Viterbi decoding is an algorithm that spots the subsequence S of an observation O = {o1, ..., on} having the highest average probability (i.e., probability scaled by the length of S) of being generated by a given hidden Markov model M with m states. The algorithm uses a modified Viterbi algorithm as an intern...
Hepatitis F virus
Hepatitis F is a hypothetical virus linked to viral hepatitis. Several hepatitis F candidates emerged in the 1990s; however, none of these claims were substantiated.In 1994, Deka et al. reported that novel viral particles had been discovered in the stool of post-transfusion, non-hepatitis A, non-hepatitis B, non-hepati...
Structure specific recognition protein 1
FACT complex subunit SSRP1 also known as structure specific recognition protein 1 is a protein that in humans is encoded by the SSRP1 gene.
OGRE
Object-Oriented Graphics Rendering Engine (OGRE) is a scene-oriented, real-time, open-source, 3D rendering engine.Ogre has been ported to Windows, macOS, Linux, PocketPC, Xbox, and PS3.Since 2019, Ogre consists of two forks developed separately, namely Ogre (also called Ogre1), which is based on the original 1.x codeba...
Submarine branching unit
A submarine branching unit is a piece of equipment used in submarine telecommunications cable systems to allow the cable to split to serve more than one destination. For example, one branch might head for a cable landing point and others may continue.There are several methods by which the split can be affected, which c...
Lewis (lifting appliance)
A lewis (sometimes called a lewisson) is one of a category of lifting devices used by stonemasons to lift large stones into place with a crane, chain block, or winch. It is inserted into a specially prepared hole, or seating, in the top of a stone, preferably above its centre of mass. It works by applying principles of...
Bent press
A bent press is a type of weight training exercise wherein a weight is brought from shoulder-level to overhead one-handed using the muscles of the back, legs, and arm. A very large amount of weight can be lifted this way, compared to other types of one-hand press. It has been said that more weight can be lifted with on...
Protein asunder homolog
Protein asunder homolog (Asun) also known as cell cycle regulator Mat89Bb homolog (Mat89Bb) is a protein that in humans is encoded by the Asun gene.
Hellenic Organization for Standardization
The Hellenic Organization for Standardization (Greek: Ελληνικός Οργανισμός Τυποποίησης, Ellīnikós Organismós Typopoíīsīs; abbreviated ΕΛΟΤ in Greek and ELOT in English) is the national standards organization for the Hellenic Republic (Greece). It issues Greece's conformance marks and is responsible for various Greek st...
Nonprocedural language
NPL (for NonProcedural Language) was a relational database language developed by T.D. Truitt et al. in 1980 for Apple II and MS-DOS. In general, a non-procedural language (also called a declarative language) requires the programmer to specify what the program should do, rather than (as with a procedural language) provi...
Benzyl-2-methyl-hydroxybutyrate dehydrogenase
In enzymology, a benzyl-2-methyl-hydroxybutyrate dehydrogenase (EC 1.1.1.217) is an enzyme that catalyzes the chemical reaction benzyl (2R,3S)-2-methyl-3-hydroxybutanoate + NADP+ ⇌ benzyl 2-methyl-3-oxobutanoate + NADPH + H+Thus, the two substrates of this enzyme are benzyl (2R,3S)-2-methyl-3-hydroxybutanoate and NADP...
Generative topographic map
Generative topographic map (GTM) is a machine learning method that is a probabilistic counterpart of the self-organizing map (SOM), is probably convergent and does not require a shrinking neighborhood or a decreasing step size. It is a generative model: the data is assumed to arise by first probabilistically picking a ...
Stability (probability)
In probability theory, the stability of a random variable is the property that a linear combination of two independent copies of the variable has the same distribution, up to location and scale parameters. The distributions of random variables having this property are said to be "stable distributions". Results availabl...
Muon spin spectroscopy
Muon spin spectroscopy, also known as µSR, is an experimental technique based on the implantation of spin-polarized muons in matter and on the detection of the influence of the atomic, molecular or crystalline surroundings on their spin motion. The motion of the muon spin is due to the magnetic field experienced by the...
Gradient discretisation method
In numerical mathematics, the gradient discretisation method (GDM) is a framework which contains classical and recent numerical schemes for diffusion problems of various kinds: linear or non-linear, steady-state or time-dependent. The schemes may be conforming or non-conforming, and may rely on very general polygonal o...
X-Moto
X-Moto is a free and open source 2D motocross platform game developed for Linux, FreeBSD, Mac OS X and Microsoft Windows, where physics play an all important role in the gameplay. The basic gameplay clones that of Elasto Mania, but the simulated physics are subtly different.
IRC poker
IRC poker was a form of poker played over the IRC chat protocol before the surge in popularity of online poker in the early 2000s. A computer program was used to deal and manage the games. Commands could be typed in directly with a standard IRC client but point-and-click graphical clients were soon developed. The abili...
Argument shift method
In mathematics, the argument shift method is a method for constructing functions in involution with respect to Poisson–Lie brackets, introduced by Mishchenko and Fomenko (1978). They used it to prove that the Poisson algebra of a finite-dimensional semisimple Lie algebra contains a complete commuting set of polynomials...
Acetylcarnosine
N-Acetylcarnosine (NAC) (Not to confuse with N-Acetylcysteine) is a naturally occurring compound chemically related to the dipeptide carnosine. The NAC molecular structure is identical to carnosine with the exception that it carries an additional acetyl group. The acetylation makes NAC more resistant to degradation by ...
Crus fracture
A crus fracture is a fracture of the lower legs bones meaning either or both of the tibia and fibula.
Grandmaster (martial arts)
Grandmaster and Master are titles used to describe or address some senior or experienced martial artists. Typically these titles are honorary in nature, meaning that they do not confer rank, but rather distinguish the individual as very highly revered in their school, system, or style.
World Scout Emblem
The World Scout Emblem is the emblem of the World Organization of the Scout Movement and is worn by Scouts and Scouters around the world to indicate their membership. Each national Scout organization determines the manner in which the emblem is worn.
Beach polo
Beach polo is a team sport and close variant of arena polo.
Nidogen-2
Nidogen-2, also known as osteonidogen, is a basal lamina protein of the nidogen family. It was the second nidogen to be described after nidogen-1 (entactin). Both play key roles during late embryonic development. In humans it is encoded by the NID2 gene.
Gigantism
Gigantism (Greek: γίγας, gígas, "giant", plural γίγαντες, gígantes), also known as giantism, is a condition characterized by excessive growth and height significantly above average. In humans, this condition is caused by over-production of growth hormone in childhood, resulting in people up to 2.7 m (9.0 ft) in height....
Principle of explosion
In classical logic, intuitionistic logic and similar logical systems, the principle of explosion (Latin: ex falso [sequitur] quodlibet, 'from falsehood, anything [follows]'; or ex contradictione [sequitur] quodlibet, 'from contradiction, anything [follows]'), or the principle of Pseudo-Scotus (falsely attributed to Dun...
Error-related negativity
Error-related negativity (ERN), sometimes referred to as the Ne, is a component of an event-related potential (ERP). ERPs are electrical activity in the brain as measured through electroencephalography (EEG) and time-locked to an external event (e.g., presentation of a visual stimulus) or a response (e.g. an error of c...
DNS hijacking
DNS hijacking, DNS poisoning, or DNS redirection is the practice of subverting the resolution of Domain Name System (DNS) queries. This can be achieved by malware that overrides a computer's TCP/IP configuration to point at a rogue DNS server under the control of an attacker, or through modifying the behaviour of a tru...
Univariate
In mathematics, a univariate object is an expression, equation, function or polynomial involving only one variable. Objects involving more than one variable are multivariate. In some cases the distinction between the univariate and multivariate cases is fundamental; for example, the fundamental theorem of algebra and E...
Lymphotoxin beta
Lymphotoxin-beta (LT-beta) also known as tumor necrosis factor C (TNF-C) is a protein that in humans is encoded by the LTB gene.
HP TopShot Technology
HP TopShot technology is digital camera technology that serves as the scanning mechanism on a LaserJet Multifunctional Printer (MFP).
FBXO6
F-box only protein 6 is a protein that in humans is encoded by the FBXO6 gene.This gene encodes a member of the F-box protein family which is characterized by an approximately 40 amino acid motif, the F-box. The F-box proteins constitute one of the four subunits of the ubiquitin protein ligase complex called SCFs (SKP1...
Radial fossa
The radial fossa is a slight depression found on the humerus above the front part of the capitulum. It receives the anterior border of the head of the radius when the forearm is flexed.
Surfactant–albumin ratio
The surfactant–albumin ratio is a test for assessing fetal lung maturity. The test, though no longer commercially available, used an automatic analyzer to measure the polarized fluorescent light emitted from a sample of amniotic fluid that had been challenged with a fluorescent probe that interacted competitively with ...
Advanced oxidation process
Advanced oxidation processes (AOPs), in a broad sense, are a set of chemical treatment procedures designed to remove organic (and sometimes inorganic) materials in water and wastewater by oxidation through reactions with hydroxyl radicals (·OH). In real-world applications of wastewater treatment, however, this term usu...
Queen clip
In beekeeping, a queen clip is a small spring-loaded metal or plastic clamshell-shaped clip designed to pick up or contain a queen bee. It has slits in its sides that worker bees can pass through to attend to the queen's needs or to receive queen substance, but the queen bee cannot pass through. When empty, it can be ...
Spiral array model
In music theory, the spiral array model is an extended type of pitch space. A mathematical model involving concentric helices (an "array of spirals"), it represents human perceptions of pitches, chords, and keys in the same geometric space. It was proposed in 2000 by Elaine Chew in her MIT doctoral thesis Toward a Math...
Michael D. Fox
Michael D. Fox is an American neurologist at Harvard Medical School in Boston, Massachusetts where he holds the Raymond D. Adams Distinguished Chair in Neurology and directs the Center for Brain Circuit Therapeutics at Brigham and Women's Hospital. His research has focused on resting state brain fMRI which uses spontan...
Small-angle X-ray scattering
Small-angle X-ray scattering (SAXS) is a small-angle scattering technique by which nanoscale density differences in a sample can be quantified. This means that it can determine nanoparticle size distributions, resolve the size and shape of (monodisperse) macromolecules, determine pore sizes, characteristic distances of...
Infinite group
In group theory, an area of mathematics, an infinite group is a group whose underlying set contains an infinite number of elements. In other words, it is a group of infinite order.
RIS (file format)
RIS is a standardized tag format developed by Research Information Systems, Incorporated (the format name refers to the company) to enable citation programs to exchange data. It is supported by a number of reference managers. Many digital libraries, like IEEE Xplore, Scopus, the ACM Portal, Scopemed, ScienceDirect, Spr...
Argon oxygen decarburization
Argon oxygen decarburization (AOD) is a process primarily used in stainless steel making and other high grade alloys with oxidizable elements such as chromium and aluminium. After initial melting the metal is then transferred to an AOD vessel where it will be subjected to three steps of refining; decarburization, reduc...
Lax–Wendroff theorem
In computational mathematics, the Lax–Wendroff theorem, named after Peter Lax and Burton Wendroff, states that if a conservative numerical scheme for a hyperbolic system of conservation laws converges, then it converges towards a weak solution.
Dbndns
dbndns was a fork of the djbdns software package, maintained by the Debian Project, made possible by the release of djbdns to the public domain. The fork was created so as to add many common patches to djbdns. Most notably, this now includes IPv6 support. Previously, it was necessary to get a special 'djbdns-installer'...
Group-stack
In algebraic geometry, a group-stack is an algebraic stack whose categories of points have group structures or even groupoid structures in a compatible way. It generalizes a group scheme, which is a scheme whose sets of points have group structures in a compatible way.
On-again, off-again relationship
An on-again, off-again relationship (also known as an on-and-off relationship) is a form of interpersonal relationship between two people whose breakups are followed by reconciliation, perpetuating a cycle. Relationship reconciliation is defined as the process in which partners attempt to heal the hurt or wrong that wa...
Plasmon coupling
Plasmon coupling is a phenomenon that occurs when two or more plasmonic particles approach each other to a distance below approximately one diameter's length. Upon the occurrence of plasmon coupling, the resonance of individual particles start to hybridize, and their resonance spectrum peak wavelength will shift (eithe...
Roller hockey rankings
The roller hockey rankings are rankings of national teams and clubs of this sport.
IF-16
iF-16 is a 1997 video game developed by Digital Integration and published by Interactive Magic.
Takeda (video game)
Takeda is a real-time tactics video game based on the life of Takeda Shingen. Takeda was developed by Magitech Corporation.
AT&T DSP1
The AT&T DSP1 was a pioneering digital signal processor (DSP) created by Bell Labs.
Meningococcal vaccine
Meningococcal vaccine refers to any vaccine used to prevent infection by Neisseria meningitidis. Different versions are effective against some or all of the following types of meningococcus: A, B, C, W-135, and Y. The vaccines are between 85 and 100% effective for at least two years. They result in a decrease in mening...
CR-4056
CR-4056 is an analgesic drug candidate with a novel mechanism of action, acting as a ligand for the imidazoline receptor I2. It showed promising results in animal studies against various types of neuropathic pain, and has reached Phase II human clinical trials as a potential treatment for pain associated with osteoarth...
Inelastic collision
An inelastic collision, in contrast to an elastic collision, is a collision in which kinetic energy is not conserved due to the action of internal friction. In collisions of macroscopic bodies, some kinetic energy is turned into vibrational energy of the atoms, causing a heating effect, and the bodies are deformed.
Champ (food)
Champ (brúitín in Irish) is an Irish dish of mashed potatoes with scallions, butter and milk.
Juice Cubes
Juice Cubes is a match 3 puzzle video game developed by Pocket PlayLab and published by Rovio Stars, as its second title, for iOS and Android. It is also available as a Facebook app, so it may be played on PC with a web browser.
Ammonium formate
Ammonium formate, NH4HCO2, is the ammonium salt of formic acid. It is a colorless, hygroscopic, crystalline solid.
AllClear ID
AllClear ID (aka AllClear and formerly Debix) provides products and services meant to protect people and their personal information from threats related to identity theft. AllClear ID's main service providers include technology and customer service teams.
GPR101
Probable G-protein coupled receptor 101 is a protein that in humans is encoded by the GPR101 gene.G protein-coupled receptors (GPCRs, or GPRs) contain 7 transmembrane domains and transduce extracellular signals through heterotrimeric G proteins.
Median palatal cyst
The median palatal cyst is a rare cyst that may occur anywhere along the median palatal raphe. It may produce swelling because of infection and is treated by excision or surgical removal. Some investigators now believe that this cyst represents a more posterior presentation of a nasopalatine duct cyst, rather than a se...
Compulsive behavior
Compulsive behavior (or compulsion) is defined as performing an action persistently and repetitively. Compulsive behaviors could be an attempt to make obsessions go away. The act is usually a small, restricted and repetitive behavior, yet not disturbing in a pathological way. Compulsive behaviors are a need to reduce a...
Uranium–lead dating
Uranium–lead dating, abbreviated U–Pb dating, is one of the oldest and most refined of the radiometric dating schemes. It can be used to date rocks that formed and crystallised from about 1 million years to over 4.5 billion years ago with routine precisions in the 0.1–1 percent range.The method is usually applied to zi...
ENOX2
ENOX2 is a gene located on the long arm of the X chromosome in humans. The gene encodes the protein Ecto-NOX disulfide-thiol exchanger 2, a member of the NOX family of NADPH oxidases.Ecto-NOX disulfide-thiol exchanger 2 is a growth-related cell surface protein. It was identified because it reacts with the monoclonal an...
Single-occupancy vehicle
A single-occupancy vehicle (SOV) is a privately operated vehicle whose only occupant is the driver. The drivers of SOVs use their vehicles primarily for personal travel, daily commuting and for running errands. The types of vehicles include, but are not limited to, sport utility vehicles (SUVs), light-duty trucks, and ...
Fearless Photog
Fearless Photog is a character created for Mattel's Masters of the Universe toyline. A heroic warrior with a robotic camera-shaped head, he has the ability to ‘focus in’ on his enemies and drain their strength. His chest plate displays silhouettes of his defeated enemies.
Categorical distribution
In probability theory and statistics, a categorical distribution (also called a generalized Bernoulli distribution, multinoulli distribution) is a discrete probability distribution that describes the possible results of a random variable that can take on one of K possible categories, with the probability of each catego...
Fitness approximation
Fitness approximation aims to approximate the objective or fitness functions in evolutionary optimization by building up machine learning models based on data collected from numerical simulations or physical experiments. The machine learning models for fitness approximation are also known as meta-models or surrogates, ...
Absorption (psychology)
Absorption is a disposition or personality trait in which a person becomes absorbed in their mental imagery, particularly fantasy. This trait thus correlates highly with a fantasy prone personality. The original research on absorption was by American psychologist Auke Tellegen. The construct of absorption was developed...
Nomological network
A nomological network (or nomological net) is a representation of the concepts (constructs) of interest in a study, their observable manifestations, and the interrelationships between these. The term "nomological" derives from the Greek, meaning "lawful", or in philosophy of science terms, "law-like". It was Cronbach a...
Breakaway rim
A breakaway rim is a basketball rim that contains a hinge and a spring at the point where it attaches to the backboard so that it can bend downward when a player dunks a basketball, and then quickly snaps back into a horizontal position when the player releases it. It allows players to dunk the ball without shattering ...
MicroDNA
MicroDNA is the most abundant subtype of Extrachromosomal Circular DNA (eccDNA) in humans, typically ranging from 200-400 base pairs in length and enriched in non-repetitive genomic sequences with a high density of exons. Additionally, microDNA has been found to come from regions with CpG-islands which are commonly fou...
USB4
USB4 (official style), sometimes referred to as USB 4.0, is a technical specification that the USB Implementers Forum (USB-IF) released on 29 August 2019. USB4 is based on the Thunderbolt 3 protocol specification, which Intel has donated to the USB-IF, but is aligned with the Thunderbolt 4 specification. The USB4 archi...
Triangle mesh
In computer graphics, a triangle mesh is a type of polygon mesh. It comprises a set of triangles (typically in three dimensions) that are connected by their common edges or vertices.
Hidden attractor
In the bifurcation theory, a bounded oscillation that is born without loss of stability of stationary set is called a hidden oscillation. In nonlinear control theory, the birth of a hidden oscillation in a time-invariant control system with bounded states means crossing a boundary, in the domain of the parameters, wher...