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β
The arrow symbol β may refer to: * The downward direction, a relative direction * The keyboard cursor control key, an arrow key * A downwards arrow, a Unicode arrow symbol * Logical NOR, operator which produces a result that is the negation of logical OR * An undefined object, in mathematical well-definition * A comma category, in category theory * Down (game theory), a mathematical game * The ingressive sound, in phonetics * An APL function * "Decreased" (and similar meanings), in medical notation * The precipitation In meteorology, precipitation is any product of the condensation of atmospheric water vapor that falls under gravitational pull from clouds. The main forms of precipitation include drizzle, rain, sleet, snow, ice pellets, graupel and hail. ... of an insoluble solid, in chemical notation See also * Down sign (other) * Arrow (other) ** β (other) ** β (other) ** β (other) {{disambiguation Logic s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Combinatorial Game Theory
Combinatorial game theory is a branch of mathematics and theoretical computer science that typically studies sequential games with perfect information. Study has been largely confined to two-player games that have a ''position'' that the players take turns changing in defined ways or ''moves'' to achieve a defined winning condition. Combinatorial game theory has not traditionally studied games of chance or those that use imperfect or incomplete information, favoring games that offer perfect information in which the state of the game and the set of available moves is always known by both players. However, as mathematical techniques advance, the types of game that can be mathematically analyzed expands, thus the boundaries of the field are ever changing. Scholars will generally define what they mean by a "game" at the beginning of a paper, and these definitions often vary as they are specific to the game being analyzed and are not meant to represent the entire scope of the field. C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ingressive Sound
In phonetics, ingressive sounds are sounds by which the airstream flows inward through the mouth or nose. The three types of ingressive sounds are lingual ingressive or velaric ingressive (from the tongue and the velum), glottalic ingressive (from the glottis), and pulmonic ingressive (from the lungs). The opposite of an ingressive sound is an egressive sound, by which the air stream is created by pushing air out through the mouth or nose. The majority of sounds in most languages, such as vowels, are both pulmonic and egressive. Lingual ingressive Lingual ingressive, or velaric ingressive, describes an airstream mechanism in which a sound is produced by closing the vocal tract at two places of articulation in the mouth. This rarefies the air in the enclosed space by lowering the tongue and then releasing both closures. Such sounds are called " clicks". Glottalic ingressive Glottal ingressive is the term generally applied to the implosive consonants, which actually use a mix ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Down Sign (other)
Down Sign may refer to: *A Nigerian-based design studio and business centre *A generic symbol for downloading, receiving data from a remote system *One of the arrow keys on a computer keyboard *Thumbs-down, a thumb signal *β, the symbol for Logical NOR *β, down in Combinatorial game theory See also *Down (other) *Sign (other) *β (other) *Sign A sign is an object, quality, event, or entity whose presence or occurrence indicates the probable presence or occurrence of something else. A natural sign bears a causal relation to its objectβfor instance, thunder is a sign of storm, or me ..., an object, quality, or event whose presence or occurrence indicates the presence or occurrence of something else * Relative direction, a downward direction * Downgrade, reverting software (or hardware) back to an older version * Downlink, signals coming down from a satellite, spacecraft, or aircraft {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
β (other)
The symbol β, an upward pointing arrow, also called up arrow, uparrow, or upwards arrow, may refer to: Notation * β, a mathematical symbol for "undefined" * β, a notation of Knuth's up-arrow notation for very large integers * β, a mathematical game theory position ''Up'' * β or Sheffer stroke, the logical connective "not both" or NAND * β, the APL function 'take' * "Increased" (and similar meanings), in medical notation * β, a chemical symbol for production of gas, which bubbles up. Character representations * β, upwards arrow, a Unicode arrow symbol * β, ↑, a HTML or XML character entity * β, codepoint 8A (hex) in EBCDIC Code page 293, used for writing APL * β, the glyph for character 94 (decimal) in ASCII until 1967, when it was replaced by the caret (^). See also * κ, an archaic Romanian Cyrillic letter * Arrow keys, on computer keyboards * Arrow (other) ** β (other) ** β (other) β or -> may refer to: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arrow (symbol)
An arrow is a graphical symbol, such as β or β, or a pictogram, used to point or indicate direction. In its simplest form, an arrow is a triangle, chevron, or concave kite, usually affixed to a line segment or rectangle, and in more complex forms a representation of an actual arrow (e.g. β΅ U+27B5). The direction indicated by an arrow is the one along the length of the line or rectangle toward the single pointed end. History An older (medieval) convention is the manicule (pointing hand, π). Pedro Reinel in c. 1504 first used the fleur-de-lis as indicating north in a compass rose; the convention of marking the eastern direction with a cross is older (medieval). Use of the arrow symbol does not appear to pre-date the 18th century. An early arrow symbol is found in an illustration of Bernard Forest de BΓ©lidor's treatise ''L'architecture hydraulique'', printed in France in 1737. The arrow is here used to illustrate the direction of the flow of water and of the wat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Medical Abbreviations
Abbreviations are used very frequently in medicine. They boost efficiency as long as they are used intelligently. The advantages of brevity should be weighed against the possibilities of obfuscation (making the communication harder for others to understand) and ambiguity (having more than one possible interpretation). Certain medical abbreviations are avoided to prevent mistakes, according to best practices (and in some cases regulatory requirements); these are flagged in the list of abbreviations used in medical prescriptions. Orthographic styling Periods (stops) Periods (stops) are often used in styling abbreviations. Prevalent practice in medicine today is often to forego them as unnecessary. * Example: ** ''Less common:'' The diagnosis was C.O.P.D. hronic obstructive pulmonary disease** ''More common:'' The diagnosis was COPD Plurals The prevalent way to represent plurals for medical acronyms and initialisms is simply to affix a lowercase ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
β (other)
β or -> may refer to: * one of the arrow symbols, characters of Unicode * one of the arrow keys, on a keyboard * β, >, representing the assignment operator in various programming languages * ->, a Pointer operator in C and C++ where a->b is synonymous with (*a).b (except when either -> or * has been overridden in C++). * β, goto in the APL programming language * β, representing the direction of a chemical reaction in a chemical equation * β, representing the set of all mathematical functions that map from one set to another in set theory * β, representing a material implication in logic * β, representing morphism in category theory * β, representing a vector in physics and mathematics * the relative direction of right or forward * β, a notation of Conway chained arrow notation Conway chained arrow notation, created by mathematician John Horton Conway, is a means of expressing certain extremely large numbers. It is simply a finite sequence of positive intege ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arrow (other)
An arrow is a projectile launched from a bow. Arrow or arrows may also refer to: Symbols * Arrow (symbol) ** β (other) ** β (other) ** β (other) ** β (other) Places * Arrow, Kentucky * Arrow, Warwickshire, England * Arrow River (New Zealand) * River Arrow, Wales * River Arrow, Worcestershire, England People * Arrow (musician) (1949β2010), calypso and soca musician * Gilbert John Arrow (1873β1948), English entomologist * Kenneth Arrow (1921β2017), American economist, joint winner of the 1972 Nobel Prize in Economics Arts, entertainment, and media Fictional entities * Arrow (comics), a superhero character, first appearing in 1938 * The Arrow, a fictional location, the first Dharma Initiative station in the television series ''Lost'' *Arrow, a character from Rudolph the Red-Nosed Reindeer: The Movie. Music Groups and labels * Arrows (Australian band), indie rock band established 2006 * Arrows (British band), 1970s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemical Equation
A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and chemical formulas. The reactant entities are given on the left-hand side and the product entities on the right-hand side with a plus sign between the entities in both the reactants and the products, and an arrow that points towards the products to show the direction of the reaction. The chemical formulas may be symbolic, structural (pictorial diagrams), or intermixed. The coefficients next to the symbols and formulas of entities are the absolute values of the stoichiometric numbers. The first chemical equation was diagrammed by Jean Beguin in 1615. Structure A chemical equation (see an example below) consists of a list of reactants (the starting substances) on the left-hand side, an arrow symbol, and a list of products (substances formed in the chemical reaction) on the right-hand side. Each substance is specified by its chemical formula, optionally preceded by a number called ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arrow (symbol)
An arrow is a graphical symbol, such as β or β, or a pictogram, used to point or indicate direction. In its simplest form, an arrow is a triangle, chevron, or concave kite, usually affixed to a line segment or rectangle, and in more complex forms a representation of an actual arrow (e.g. β΅ U+27B5). The direction indicated by an arrow is the one along the length of the line or rectangle toward the single pointed end. History An older (medieval) convention is the manicule (pointing hand, π). Pedro Reinel in c. 1504 first used the fleur-de-lis as indicating north in a compass rose; the convention of marking the eastern direction with a cross is older (medieval). Use of the arrow symbol does not appear to pre-date the 18th century. An early arrow symbol is found in an illustration of Bernard Forest de BΓ©lidor's treatise ''L'architecture hydraulique'', printed in France in 1737. The arrow is here used to illustrate the direction of the flow of water and of the wat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Relative Direction
In geometry, a position or position vector, also known as location vector or radius vector, is a Euclidean vector that represents the position of a point ''P'' in space in relation to an arbitrary reference origin ''O''. Usually denoted x, r, or s, it corresponds to the straight line segment from ''O'' to ''P''. In other words, it is the displacement or translation that maps the origin to ''P'': :\mathbf=\overrightarrow The term "position vector" is used mostly in the fields of differential geometry, mechanics and occasionally vector calculus. Frequently this is used in two-dimensional or three-dimensional space, but can be easily generalized to Euclidean spaces and affine spaces of any dimension.Keller, F. J, Gettys, W. E. et al. (1993), p 28β29 Relative position The relative position of a point ''Q'' with respect to point ''P'' is the Euclidean vector resulting from the subtraction of the two absolute position vectors (each with respect to the origin): :\Delta \mathbf=\ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
