In mathematics , the Pochhammersymbol introduced by Leo August Pochhammer is the notation x sub n sub . Depending on the context the Pochhammersymbol may represent either the rising factorial or the falling factorial as defined below. Care needs to be taken to check which interpretation is being used in any particular article. In this article the Pochhammersymbol x sub n sub is used to represent the falling factorial or permutation sometimes called the descending factorial , ref name Steffensen falling sequential product , lower factorial . math x n x x 1 x 2 cdots x n 1 math For example math 10 4 10 cdot 9 cdot 8 cdot 7. math If x is an integer, then x sub n sub gives the number of permutation ... in the theory of special functions in particular the hypergeometric function the Pochhammersymbol ... function by the formula math 1 n n n n . , math The Pochhammersymbol has a generalized version called the generalized Pochhammersymbol , used in multivariate analysis. There is also a q analog q analogue , the q Pochhammersymbol q Pochhammersymbol . Properties The rising and falling sequential ... See also Pochhammer k symbol Notes reflist Pochhammer actually used x sub n sub to denote the binomial coefficient harv Knuth 1992 . http www.docstoc.com docs 5473276 PochhammerSymbol Selected Proofs ... Theory publisher Cambridge University Press isbn 0521558212 . DEFAULTSORT PochhammerSymbol Category Gamma and related functions Category Factorial and binomial topics de PochhammerSymbol es S mbolo de Pochhammer fr Symbole de Pochhammer it Fattoriale crescente pl Pot gi krocz ce zh ... x . In this article the symbol x sup n sup is used for the rising factorial , sometimes called the Pochhammer function , Pochhammer polynomial , ascending factorial , ref name Steffensen Citation ... on the binomial coefficients carry over to the Pochhammer symbols. It follows from these expressions ... such relations, including the Pochhammer polynomials, is given by the theory of binomial type ... more details
Unreferenced date December 2006 Wikify date October 2010 In mathematics , the generalized Pochhammersymbol of parameter math alpha 0 math and partition number theory partition math kappa kappa 1, kappa 2, ldots, kappa m math generalizes the classical Pochhammersymbol , named after Leo August Pochhammer , and is defined as math a alpha kappa prod i 1 m prod j 1 kappa i left a frac i 1 alpha j 1 right . math DEFAULTSORT Generalized PochhammerSymbol Category Gamma and related functions Category Factorial and binomial topics Math stub ... more details
In the mathematical theory of special functions , the Pochhammer k symbol and the k gamma function , introduced by Rafael D az and Eddy Pariguan ref cite arxiv date 2005 class math.CA eprint math 0405596 first Rafael last D az coauthors Eddy Pariguan title On hypergeometric functions and k Pochhammersymbol ref , are generalizations of the Pochhammersymbol and gamma function . They differ from the Pochhammersymbol and gamma function in that they can be related to a general arithmetic progression in the same manner as those are related to the sequence of consecutive integer s. The Pochhammer k symbol x sub n,k sub is defined as math x n,k x x k x 2k cdots x n 1 k , , math and the k gamma function sub k sub , with k 0, is defined as math Gamma k x lim n to infty frac n k n nk x k 1 x n,k . math When k 1 the standard Pochhammersymbol and gamma function are obtained. D az and Pariguan use these definitions to demonstrate a number of properties of the hypergeometric function . Although D az and Pariguan restrict these symbols to k 0, the Pochhammer k symbol as they define it is well defined for all real k, and for negative k gives the falling factorial , while for k 0 it reduces to the Exponentiation power x sup n sup . The D az and Pariguan paper does not address the many analogies between the Pochhammer k symbol and the power function, such as the fact that the binomial theorem can be extended to Pochhammer k symbols. It is true, however, that many equations involving the power function x sup n sup continue to hold when x sup n sup is replaced by x sub n,k sub . References references Category Gamma and related functions Category Factorial and binomial topics ... more details
lowercase title q Pochhammersymbol In mathematics , in the area of combinatorics , a q Pochhammersymbol , also called a q shifted factorial , is a q analog of the common Pochhammersymbol . It is defined as math a q n prod k 0 n 1 1 aq k 1 a 1 aq 1 aq 2 cdots 1 aq n 1 . math The q Pochhammersymbol is a major building block in the construction of q analogs for instance, in the theory of basic hypergeometric series , it plays the role that the ordinary Pochhammersymbol plays in the theory of generalized hypergeometric series . Unlike the ordinary Pochhammersymbol, the q Pochhammersymbol can be extended to an infinite product math a q infty prod k 0 infty 1 aq k . math This is an analytic function of q in the interior of the unit disk , and can also be considered as a formal power series in q . The special case math phi q q q infty prod k 1 infty 1 q k math is known as Euler s function , and is important in combinatorics , number theory , and the theory of modular forms . A q series is a Series mathematics series in which the coefficients are functions of q , typically depending on q via q Pochhammer symbols. Identities The finite product can be expressed in terms of the infinite product math a q n frac a q infty aq n q infty , math which extends the definition to negative integers n . Thus, for nonnegative n , one has math a q n frac 1 aq n q n math and math a q n frac q a n q n n 1 2 q a q n . math The q Pochhammersymbol is the subject of a number of q series identities ... interpretation The q Pochhammersymbol is closely related to the enumerative combinatorics ... q Pochhammer symbols so frequently involve products of many symbols, the standard convention is to write a product as a single symbol of multiple arguments math a 1,a 2, ldots,a m q n a 1 q n a 2 ... Binomial Coefficient Category Number theory Category Q analogs es S mbolo q Pochhammer ja Q pl Symbol q Pochhammera ... more details
File Pochhammer.curve.svg thumb 300px A Pochhammer contour winds clockwise around one point, then clockwise around another point, then counterclockwise around the first point, then counterclockwise around the second. The exact position, curvature, etc. are in this case not essential the sequence of windings around the two special points is. In mathematics, the Pochhammer contour , introduced by harvs txt authorlink Camille Jordan first Camille last Jordan year 1887 and harvs txt authorlink Leo Pochhammer first Leo last Pochhammer year 1890 , is a contour in the complex plane with two points removed, used for contour integration . If A and B are loops around the two points, both starting at some fixed point P , then the Pochhammer contour is the commutator ABA sup &minus 1 sup B sup &minus 1 sup , where the superscript &minus 1 denotes a path taken in the opposite direction. With the two points taken as 0 and 1, the fixed basepoint P being on the real axis between them, an example is the path that starts at P , encircles the point 1 in the counter clockwise direction and returns to P , then encircles 0 counter clockwise and returns to P , after that circling 1 and then 0 clockwise, before coming back to P . The class of the contour is an actual commutator when it is considered in the fundamental group with basepoint P of the complement in the complex plane or Riemann sphere of the two points looped. When it comes to taking contour integrals, moving basepoint from P to another ... to a single point. File Pochhammer.homology2.svg thumb 300px Pochhammer cycle is homologous to zero ... over the Pochhammer contour C as math displaystyle 1 e 2 pi i alpha 1 e 2 pi i beta Beta ... in such a way that if either one of the nails is removed, the picture falls. The Pochhammer contour ... thumb 300px A Borromean link. The Pochhammer curve together with two suitably located ... Citation last1 Pochhammer first1 L. title Zur Theorie der Euler schen Integrale publisher Springer Berlin ... more details
About the graphic symbol used to denote prohibition the Japanese kana No kana Image ProhibitionSign2.svg thumb 150px right The ISO 3864 1 prohibition sign The no symbol also prohibition sign , circle backslash symbol , or universal no is a circle with a diagonal diagonal line through it running from top left to bottom right , surrounding a pictogram used to indicate something is not permitted. The no symbol is usually colored red. The Unicode Architecture and terminology Unicode code point for the prohibition sign also called the no symbol is code U 20E0 code , Combining Enclosing Circle Backslash . It is a combining character , which means that it appears on top of the character before it, so ... sign . So 35 of everything within the outer edge of the no symbol must be the symbol itself. Additionally for printed signs under the UK rules, the width of a no symbol is set at 80 the height of the area it is printed to. Uses The prohibition symbol is used on traffic signs, so that drivers ... 50px No left turn Image No U Turn sign.svg 50px No U turn Image No Parking symbol sign.svg 50px No parking ..., and sealed boxes of merchandise that is sold in stores. Using a graphical symbol is useful when the item ... deterrent spray brand symbol showing the prohibition sign over a mosquito. The Ghostbusters logo is a fictional ... in hue is considered acceptable and recognized by the general public as a symbol of prohibition, it is still governed by local and international standards. The standard definition of the no symbol ... size. The range of color and shape defined in this standard for the prohibition symbol or no symbol ... left to the lower right over the top of a black graphical symbol. Since the standard is not published ... as a Yes symbol , or the anti prohibition sign , indicating that the activity represented inside ... that a pathway is for pedestrians and cyclists. The no symbol does not always have the slash ... www.freesignage.com prohibited signs.php Printable US signage using the no symbol Category Infographics ... more details
Leo August Pochhammer 25 August 1841, Stendal &ndash 24 March 1920, Kiel was a Prussia n mathematician, known for his work on special function s. He introduced the Pochhammersymbol , now generally used for expressing hypergeometric function s in a compact notation. See also Pochhammersymbol Generalized Pochhammersymbol q PochhammersymbolPochhammer contour Jordan&ndash Pochhammer differential equation External links http scienceworld.wolfram.com biography Pochhammer.html Eric W. Weisstein s world of science Persondata Metadata see Wikipedia Persondata . NAME Pochhammer, Leon August ALTERNATIVE NAMES SHORT DESCRIPTION DATE OF BIRTH 25 August 1841 PLACE OF BIRTH DATE OF DEATH 24 March 1920 PLACE OF DEATH DEFAULTSORT Pochhammer, Leon August Category 1841 births Category 1920 deaths Category German mathematicians Category People from the Province of Saxony Category People from Stendal Germany mathematician stub de Leo August Pochhammer es Leo August Pochhammer fr Leo Pochhammer ht Leo August Pochhammer nl Leo Pochhammer pt Leo Pochhammer ... more details
Wiktionarypar symbol NOTOC Symbol s are objects, characters, or other representations of ideas, concepts, objects, or abstractions. Symbol may also refer to Computer science Symbol data , the smallest amount of data transmitted at a time in digital communications Debug symbol , debugging information used to troubleshoot computer programs, analyze memory dumps Symbol Lisp , a primitive data type of the Lisp programming language Lisp programming language also used to name variables and functions. Logic Symbol formal , a string, used in formal language s, and formal system s. Symbols may have a model or a formal semantics . Symbol grounding , the problem of how symbols acquire meaning Music Symbol Records , a record label Symbols album Symbols album , 1997 album from the industrial rock band KMFDM Symbol album Symbol album , 2005 album by Japanese electronica musician Susumu Yokota Symbols band , a Brazilian heavy metal band Symbol choir , the name of a choir in Romania Theology Symbol of Nicea or Nicene Creed Symbol liturgical theology , in contrast to a sign, and relevant to liturgy. Mathematics Symbol of a differential operator Other uses Symbol Technologies , an AIDC company based in Holtsville, New York, United States Symbol typeface , a font designed by Aldo Novarese 1982 , one of the four standard PostScript fonts Casablanca Conference 1943 , codenamed SYMBOL Simbolul , a Romanian literary magazine Symbol Film Symbol , a movie by Hitoshi Matsumoto . See also Symbolic disambiguation Symbolism disambiguation Cymbal Semeiotic Semiotics Punctuation , are symbols that indicate the structure and organization of written language. disambig fr Symbole ro Simbol dezambiguizare ... more details
Unreferenced date February 2011 Image Venus symbol.svg 100px thumb right Venus symbol Image Woman power emblem.svg 100px thumb right Symbol of feminism based on Venus symbol The Venus symbol is a depiction of a circle with a small Cross symbol cross below it. The symbol is historically associated with the Roman goddess Venus mythology Venus or the Greek goddess Aphrodite . It has a Unicode designation of U 2640, and is used in various media to represent things associated in some way with the mythological character, including The female sex The planet Venus The chemical element copper Feminism in philosophy and sociology The female connector in a pair of mating connectors or fasteners See also Mars symbol Gender symbol The ankh , an Egyptian hieroglyph resembling the Venus symbol DEFAULTSORT Venus Symbol Category Roman mythology Category Symbols Category Alchemy cs de Venussymbol fa fr ko it nl ja no oc pl pt ru sk Venu a symbol sv Venussymbol tr Ven s sembol zh ... more details
A symbol in computer programming is a primitive datatype whose instance s have a unique human readable form. Symbols can be used as identifiers . In the most trivial implementation , they are essentially named integer s. Support The following programming language s provide support for symbols class wikitable sortable language type name s example literal s ANSI Common Lisp symbol, keyword tt sym tt , tt key tt Ruby Symbol tt sym tt ECMA JavaScript ? tt sym tt Ericsson Erlang programming language Erlang ? tt sym tt Lisp A symbol in Lisp programming language Lisp is unique in a namespace called package in Common Lisp . Symbols can be tested for equality with the function EQ. Lisp programs can generate new symbols at runtime. When Lisp reads data that contains textual represented symbols, existing symbols are referenced. If a symbol is unknown, the Lisp reader creates a new symbol. In Common Lisp symbols have the following attributes a name, a value, a function, a list of properties and a package ... class Symbol ref . In Common Lisp symbols may use any characters, including whitespace, such as spaces and newlines. If a symbol contains a whitespace character it needs to be written as this is a symbol ... to themselves. Examples The following is a simple external representation of Common Lisp symbol source lang lisp this is a symbol source Symbols can contain whitespace and all other characters source lang lisp This is a symbol with whitespace source In Common Lisp symbols with a leading colon in their printed representations are keyword symbol s. These are interned in the keyword package. source lang lisp keyword symbol source A printed representation of a symbol may include a package name. Two colons are written between the name of the package and the name of the symbol. source lang lisp package name symbol name source Packages can export symbols. Then only one colon is written between the name of the package and the name of the symbol. source lang lisp package exported symbol source ... more details
Unreferenced date February 2011 Image Mars symbol.svg 100px thumb right Mars symbol The Mars symbol is a depiction of a circle with an arrow emerging from it, pointing at at angle to the upper right. In old manuscripts, it is usually interpreted as the shield and spear from the war god Mars god Mars Ares . The symbol has the Unicode entry U 2642. It is used in many fields as a representation of things historically associated with the mythological figure. These include In science The male gender The planet Mars The chemical element iron In mythology The Roman god Mars god Mars or the Greek god Ares In vehicles Part of the logo for Volvo automobiles In other uses The male connector in a pair of mating connectors or fasteners The men s bathroom See also Venus symbol Gender symbol DEFAULTSORT Mars Symbol Category Roman mythology Category Symbols Category Alchemy ar cs de Marssymbol fa fr ko it ms Simbol Marikh nl ja no pl pt sk Mars symbol sv J rnsymbolen zh ... more details
A gender symbol is a symbol used to denote the sex of a organism life form or to characterize an agent by gender . The two standard gender symbols denoting male and female are derived from astrological symbols , denoting the classical planets Mars and Venus , respectively. These symbols have been in use since the Renaissance ref continuing medieval 11th century symbols known from Byzantine manuscripts, possibly with precedents in horoscopic papyri of Late Antiquity late 4th century . ref also denoting elements in Classical planets in Western alchemy alchemy , specifically the metals iron and copper . They were first used to denote the effective gender of plants i.e. sex of individual in a given .... 11, No. 4 May, 1962 , pp. 109 113 ref class wikitable Image Mars symbol.svg & x2642 50px From the symbol of Mars U 2642 unicode . The symbol for a male organism or man . Image Venus symbol.svg & x2640 50px From the symbol of Venus U 2640 unicode . The symbol for a female organism or woman . LGBT Culture ... Image Mercury symbol.svg & x263F 60px From the symbol of Mercury planet Mercury U 263F unicode . The symbol ... . Intersexual or transgender . Image Gendersign.svg & x26A7 50px Another transgender symbol, a combination ..., sometimes used as a LGBT symbols Gender symbols female homosexual symbol big unicode big U 26A3 Double male sign, sometimes used as a LGBT symbols Gender symbols male homosexual symbol big unicode big U 26A4 Interlocked male and female sign, occasionally used as a heterosexuality heterosexual symbol also bisexual big unicode big U 26A6 Male with stroke sign, used as a symbol for transgendered. also ... male with stroke sign big unicode & x26AA big U 26AA Medium white circle base, used as a symbol ... medieval Venus symbol depicting a hand mirror , the additional horizontal bar being of modern ... DEFAULTSORT Gender Symbol Category Gender Category Symbols bg cs Genderov symbol de Gender Symbol nl Seksesymbool no Kj nnssymboler ru sk Symboly na rozl enie pohlav ... more details
Punctuation marks The trademark symbol , designated by the letters TM written in Subscript and superscript superscript style , is a symbol used to provide notice that the preceding mark is a trademark . Use of this symbol does not mean that the trademark has been registered as registered trademarks are indicated using the Registered trademark symbol . The character is assigned in Unicode as unichar 2122 trade mark sign dec ref http www.unicode.org charts PDF U2100.pdf ref which is also designated by the HTML entity & trade . ref http www.w3.org TR REC html40 sgml entities.html ref On Microsoft Windows Windows systems, a superscript trademark symbol may be entered by means of Alt codes , by holding the Alt key while typing the numbers 0153 on the numeric keypad . In the X Window System , it may be entered with compose key Multi key T M . On Macintosh systems, it may be entered with Option key 2. In LaTeX , code texttrademark code is used. The service mark symbol , , has a similar function and denotation. References references See also Australian trade mark law Canadian trademark law Trademark law United Kingdom trade mark law United States trademark law Category United States trademark law Category Typographical symbols typ stub he ... more details
Distinguish Renault Clio Symbol Infobox Automobile generation name Renault Symbol manufacturer Renault image File Renault Symbol front wdebut Moscow autoshow 2008 27 08.jpg 250px 2009 Renault Symbol Thalia aka Renault Thalia production 2009 present assembly Bursa , Turkey br Santa Isabel , Argentina predecessor Renault Clio Symbol engine 1.2 L Straight 4 I4 br 1.4 L Straight 4 I4 br 1.6 L Straight 4 I4 br 1.5 L Diesel engine diesel Straight 4 I4 wheelbase convert 2473 mm in 1 abbr on length convert ... SM5 Renault Symbol or Thalia in some markets such as Poland, Czech Republic, Slovakia or Hungary ref ... Renault , ref name ref1 cite web url http www.renault.com en Vehicules renault Pages symbol thalia.aspx title Renault Symbol Thalia publisher Renault.com date accessdate 2010 11 28 ref using the Renault Clio Symbol running gear. It was revealed for the first time at the Moscow International ... New Renault Symbol an elegant three box saloon with seductive appeal.php New Renault Symbol, an elegant ... any of the Clio models. The new Symbol was designed jointly by Renault s engineering teams in France ... sing on capacity. Turkish Police uses Renault Symbol cars. ref http www.flickr.com photos 21532948 N04 3997861994 Renault Clio Symbol T rk Polis Te kilat Flickr Flickr.com ref Engines The range of engines used in Renaulty Symbol ref cite web url http www.carfolio.com search results ?makematch c&make renault&modelmatch c&model symbol&y1 2008&num 10&offset 0 title Renault Symbol specifications publisher ... abbr on 11.9 s Gallery gallery File Renault Symbol rear wdebut Moscow autoshow 2008 27 08.jpg Renault Symbol rear File Renault Thalia II front PSM 2009.jpg Renault Thalia front File Renault Thalia II rear PSM 2009.jpg Renault Thalia rear gallery References commonscat Renault Symbol Reflist Modern Renault vehicles Renault Category Renault vehicles Symbol Category Sedans Category Front wheel drive vehicles ... stub de Renault Symbol ja ro Renault Symbol ru Renault Symbol tr Renault Symbol ... more details
In computer science , a symbol table is a data structure used by a language translator such as a compiler or interpreter computing interpreter , where each identifier in a program s source code is associated with information relating to its declaration or appearance in the source, such as its data type type , scope programming scope level and sometimes its Memory address location . Implementation A common implementation technique is to use a hash table implementation. A compiler may use one large symbol table for all symbols or use separated, hierarchical symbol tables for different Scope programming scopes . Uses An object file will contain a symbol table of the identifiers it contains that are externally visible. During the linking of different object files, a Linker computing linker will use these symbol tables to resolve any unresolved references. A symbol table may only exist during the translation process, or it may be embedded in the output of that process for later exploitation, for example, during an interactive debugger debugging session , or as a resource for formatting a diagnostic ... an executable, many tools refer to the symbol table to check what addresses have been assigned to global variables and known functions. If the symbol table has been strip Unix stripped or cleaned out ... anything about the program. Example The symbol table of a small program is listed below. The table ... data symbol, holaamigosh noted by the D type , and many functions self defined as well as from the standard library . The first column is where the symbol is located in the memory, the second is http sourceware.org binutils docs 2.17 binutils nm.html nm The symbol type and the third is the name of the symbol. By passing suitable parameters, the symbol table was made to sort on basis of address ... A end See also Debug symbol Category Compiler construction de Symboltabelle es Tabla de s mbolos compilador fa fr Table des symboles nl Symbol table ja pt Tabela de s mbolos ... more details
about the symbol in number theory Kronecker delta In number theory , the Kronecker symbol , written as math left frac an right math or a n , is a generalization of the Jacobi symbol to all integer s n . It was introduced by Leopold Kronecker . Definition Let n be a non zero integer, with prime factorization math u cdot p 1 e 1 cdots p k e k , math where u is a unit ring theory unit i.e., u is 1 or 1 , and the p sub i sub are prime s. Let a be an integer. The Kronecker symbol a n is defined by math left frac a n right left frac a u right prod i 1 k left frac a p i right e i . math For odd number odd p sub i sub , the number a p sub i sub is simply the usual Legendre symbol . This leaves the case when p sub i sub 2. We define a 2 by math left frac a 2 right begin cases 0 & mbox if a mbox is even, 1 & mbox if a equiv pm1 pmod 8 , 1 & mbox if a equiv pm3 pmod 8 . end cases math Since it extends the Jacobi symbol, the quantity a u is simply 1 when u 1. When u 1, we define it by math left frac a 1 right begin cases 1 & mbox if a 0, 1 & mbox if a ge 0. end cases math Finally, we put math left frac a0 right begin cases 1& text if a pm1, 0& text otherwise. end cases math These extensions suffice to define the Kronecker symbol for all integer values n . planetmath id 6108 title Kronecker symbol Category Modular arithmetic de Kronecker Symbol nl Kronecker symbool ru uk zh ... more details
File Soyombo symbol.png thumb right The two variants of the Soyombo symbol The Soyombo symbol is a special character out of the Mongolian Soyombo script . It serves as a national symbol of Mongolia , to be found on the Flag of Mongolia , the Coat of arms of Mongolia , and on many other official documents. The elements in the symbol are given the following significance from top Fire is a general symbol of eternal growth, wealth, and success. The three tongues of the flame represent the past, present, and future. Sun and moon symbolise that the Mongolian nation will exist for eternity as the eternal blue sky. The two triangles allude to the point of an arrow or spear. They point downward to announce the defeat of interior and exterior enemies. The two horizontal rectangles give stability to the round shape. The rectangular shape represents the honesty and justice of the people of Mongolia, whether they stand at the top or at the bottom of society. The arga bilig Yin yang symbol illustrates the mutual complement of man and woman. In socialist times, it was alternatively interpreted as two fish symbolizing vigilance, because fish never close their eyes. The two vertical rectangles can be interpreted as the walls of a fort. They represent unity and strength, relating to a Mongolian proverb The friendship of two is stronger than stone walls. ref Montsame News Agency . Mongolia . 2006, ISBN 9992906278, p. 8 ref Uses File Flag of Mongolia.svg thumb The Flag of Mongolia The Soyombo symbol has appeared on the national Flag of Mongolia since 1911 except between 1921 and 1924 . It served as Coat of arms of Mongolia from 1924 to 1940, and was included in the design again in 1992. The symbol is seen all over the country, especially on a hillside outside of Ulaanbaatar . The flag and coat of arms of the Buryat Republic as well as the Flag of Agin Buryat Okrug flag of the Agin Buryat ... Category Mongolian writing systems de Sojombo Symbol es Soyombo fr Soyombo ko lt Sojombas ... more details
The Pearson symbol , or Pearson notation , is used in crystallography as a means of describing a crystal structure , and was originated by W.B. Pearson. ref W.B. Pearson, A Handbook of Lattice Spacings and Structures of Metals and Alloys,Vol. 2, Pergamon Press, Oxford, 1967 ref The symbol is made up of two letters followed by a number. For example Diamond structure, cF 8 Rutile structure, tP 6 The two italicised letters specify the Bravais lattice . The lower case letter specifies the crystal class, and the upper case letter the lattice type. The figure gives the number of the atoms in the unit cell. IUPAC nomenclature of inorganic chemistry 2005 IUPAC 2005 ref http old.iupac.org publications books rbook Red Book 2005.pdf Nomenclature of Inorganic Chemistry IUPAC Recommendations 2005 IR 3.4.4, pp.49 51 IR 11.5, pp.241 242 ref class wikitable Crystal class a triclinic m monoclinic o orthorhombic t tetragonal h hexagonal and rhombohedral c cubic class wikitable Lattice type C Side face centred F All face centred I Body centred R Rhombohedral P Primitive The fourteen possible Bravais lattices are identified by the first two letters class wikitable Crystal class Lattice symbol Pearson symbol letters Triclinic P aP Monoclinic P mP C mC Orthorhombic P oP C oC F oF I oI Tetragonal P tP I tI Hexagonal and trigonal P P hP Rhombohedral R hR Cubic P cP F cF I cI Pearson symbol and space group The Pearson symbol does not uniquely identify the space group of a crystal structure, for example both the NaCl structure, space group Fm overline 3 m and diamond space group Fd overline 3 m have the same Pearson symbol cF 8. References reflist Category Crystallography de Pearson Symbol fr Symbole de Pearson ru sk Pearsonov symbol vi K hi u Pearson ... more details
Unreferenced stub auto yes date December 2009 align right font size 7 Unicode & x273A font A starburst is a symbol consisting of a star surrounded by rays emanating from it. In Unicode , the starburst character sixteen pointed asterisk is U 273A. This can also refer to the combining cyrillic millions character Unicode . The Unicode is U 0489. DEFAULTSORT Starburst Symbol Category Visual motifs Decorative art stub ... more details
Unreferenced stub auto yes date December 2009 Symbol group is a mainly United Kingdom British term for a form of Franchising franchise in the retail sector. They do not own or operate stores, but act as suppliers to independent grocers and small supermarkets and produce stores which then trade under a common banner. Unlike other forms of franchise, they have expanded primarily by selling their services to existing stores, rather than by actively developing new outlets. SPAR is a well known symbol group with stores in many countries. There are several smaller symbol groups in the United Kingdom , such as Londis , Costcutter , Premier Stores Premier and Nisa Today Nisa Today s . In 2009, IDG reported that the symbol group market is worth 10.4bn, with a 35.9 share of the UK convenience market and a 7.3 share of the total UK grocery market. IDG report http www.igd.com index.asp?id 1&fid 1&sid 7&tid 26&cid 108 DEFAULTSORT Symbol Group Category Distribution, retailing, and wholesaling Category Business models Category Franchises Org stub ... more details
merge Baud discuss Talk Symbol rate Merger proposal date December 2008 In digital communications , symbol rate also known as baud or modulation rate is the number of symbol changes waveform changes or signalling ... signal or a line code . The Symbol rate is measured in baud Bd or symbols second. In the case of a line code, the symbol rate is the pulse rate in pulses second. Each symbol can represent or convey one or several bit s of data. The symbol rate is related to, but should not be confused with, the gross bitrate expressed in bit second. Symbols A symbol is a waveform, a state or significant condition ... device places symbols on the channel at a fixed and known symbol rate,and the receiving device has ... be a direct correspondence between a symbol and a small unit of data for example, each symbol may ... by the transitions between symbols or even by a sequence of many symbols. The symbol duration ... between transitions by looking into an eye diagram of an oscilloscope . The symbol duration time T sub s sub can be calculated as math T s 1 over f s , math where f sub s sub is the symbol rate. A simple example A baud rate of 1 kBd 1,000 Bd is synonymous to a symbol rate of 1,000 symbols per ..., this corresponds to 1,000 pulses per second. The symbol duration time is 1 1,000 second 1 millisecond ... links using only one bit per symbol, such that binary 0 is represented by one symbol, and binary 1 by another symbol. In more advanced modems and data transmission techniques, a symbol may have more ... if we mean that the bit rate is 9,600 bit s, since there is one bit per symbol in this case. It is not correct ... who can move his arm to a new position once each second, so his signalling rate baud is one symbol ..., and 45 right. Each signal symbol carries three bits of information. It takes three Binary numeral ..., each conveying several bits, a higher data rate. If N bits are conveyed per symbol, and the gross bit rate is R , inclusive of channel coding overhead, the symbol rate can be calculated as math ... more details
Punctuation marks Image Copyright.svg thumb left 150px the copyright symbol The copyright symbol , designated by a circled C , is the symbol used in copyright notices for works other than sound recordings which are indicated with the Sound recording copyright symbol Unicode symbol . The use of the symbol is described in United States copyright law , ref name notice 17 U.S.C. UnitedStatesCodeSec 17 401 ref and, internationally, by the Universal Copyright Convention . ref http www.ifla.org documents infopol copyright ucc.txt Universal Copyright Convention , Article III, 1 Paris text, July 24, 1971 ref The C stands for copyright . US copyright notice In the United States , the copyright notice consists of the symbol, or the word Copyright or abbreviation Copr. the year of first publication of the copyrighted work and an identification of the owner of the copyright, either by name, abbreviation, or other designation by which it is generally known. e.g. 2011 John Smith The notice was once required ... the symbol has long been unavailable on typewriter s and ASCII based computer systems, it has been common to approximate this symbol with the characters c however, this approximation has no standing ... used as a substitute copyright symbol where the actual copyright symbol is not available ... recording copyright symbol is the symbol Unicode the capital letter P enclosed by a circle , and is used to designate copyright in a sound recording. The copyleft symbol is a backwards C in a circle copyright symbol mirrored . Because it is unavailable on Unicode , it can be approximated with character ... Data Handling , http books.google.com books?id JZNuu8XODQMC&pg PA29&lpg PA29&dq copyleft symbol legal ... 6&ct result page 29 . ref The registered trademark symbol is the symbol the capital letter R enclosed ... obligatory symbol used in a mask work protection notice is M enclosed in a circle. In Japan, is used too. See also Sound recording copyright symbol Copyright Copyleft Enclosed C References Reflist ... more details
Unreferenced auto yes date December 2009 Orphan date December 2009 In computing , a weak symbol is a symbol definition in an object file or dynamic library that may be overridden by other symbol definitions, its value will be zero if no definition found by loader. Weak symbols are not mentioned by C or C language standards as such, inserting them into code is not portable. Some compilers can create a weak symbol with a special pragma pragma , code pragma weak code . However, the GNU Compiler Collection also supports a code attribute weak code syntax as in the example below. Example Example written for the GNU Compiler Collection Source of libfoo.so source lang c extern void foo void attribute weak void fun void if foo foo source weak test.c source lang c include < stdio.h> void fun void void foo void printf Hello n int main fun return 0 source Compile with gcc weak test.c o weak test lfoo External References http gcc.gnu.org ml gcc 1999 02n msg01219.html See also Link editor Program loader Dynamic linking Weak reference DEFAULTSORT Weak Symbol Compsci stub Category Data types Category Debugging ... more details
A status symbol is a perceived visible, external denotation of one s social position and perceived indicator of economic or social status . ref Cite book last Cherrington first David J. title Organizational Behavior pages 384 date 1994 isbn 0205155502 publisher Allyn and Bacon ref Many luxury goods are often considered status symbols. Status symbol is also a sociology sociological term as part of social ... Benz luxury vehicles luxury sedan is an example of a perceived status symbol in many cultures. ref ... publisher China Library date 1994 isbn 187341028X ref What is considered a status symbol will differ ... press , having a large collection of book s was considered a status symbol. After the advent of the printing ... was less of a status symbol. In the past, pearl s and jade were major status symbols. Another common status symbol of the past which is still somewhat present today is heraldry , or one s family name ... scar would be more of a status symbol. The condition of one s body can be a status symbol. In times ... and fat was a status symbol, indicating wealth and prosperity through having enough food and not having ... for exercise, being tanned and thin is often a status symbol in many cultures. Possessions typically ... s salary for some workers, were seen as a status symbol. ref J Brooks. http www.ncbi.nlm.nih.gov pmc articles PMC1337922 American cigarettes have become a status symbol in smoke saturated China. 1995. ref Cellphone usage in Turkey had been considered a status symbol in early 2000s. ref Yusuf Ziya ... Symbol? 2003 ref In the late 2000 s, being the subject of a biographical article on Wikipedia has been labeled a status symbol. ref cite news url http www.reuters.com article technologyNews idUSN2232893820071022 title Wikipedia page the latest status symbol coauthors Jennifer Ablan date Oct 22 ... Reflist DEFAULTSORT Status Symbol Category Symbols Category Sociology ca S mbol d estatus de Statussymbol it Status symbol he nl Statussymbool no Statussymbol ta th ... more details
Image Singapore lion head symbol.png frame The lion head symbol of Singapore. The lion head symbol was introduced in 1986 as an alternative national emblem Symbols national symbol of Singapore . The lion head was chosen as a logo, as it best captures the characteristics of Singapore s reputation as a Lion City. It is used in less formal occasions mainly to promote Singapore s national cultural identity identity . ref name Infopedia cite web last Mohamed first Zaubidah url http infopedia.nlb.gov.sg articles SIP 117 2004 12 21.html title Lion Head Symbol accessdate 2008 02 14 publisher Singapore Infopedia ref When it was first unveiled, some sections of the public felt that it should have been facing rightwards to represent a more forward looking nature. However, the original left facing lion was maintained. Origin In the 13th century Malay Annals , Sang Nila Utama , a prince from Palembang was shipwrecked and washed ashore to an island. There he saw a creature which he believed was a lion. So he named the island Singa Pura in Tamil language Singa puram which means Lion City in Malay language ... symbols lionhead.htm title The Lion Head Symbol Its Origin accessdate 2008 02 14 publisher Singapore ... www.sg explore symbols lionhead.htm title The Lion Head Symbol Its Meaning accessdate 2008 02 14 publisher ... The Singapore Lion Symbol July 1999 published by the Ministry of Information, Communications and the Arts ref name Infopedia Deleted image removed Image Symbol lion guide.gif right Subject to approval, organisations can use the Singapore Lion Symbol for the purpose of identifying with the nation and with the endeavour to achieve excellence for Singapore. In application, the symbol should not be modified in any way. However, the symbol in outline, embossed or portrayed as a watermark, are acceptable ... . The symbol should preferably be in red on a white background or white on a red background. However ... must ensure that the symbol is depicted only in one colour. References reflist 2 External links ... more details
Encyclopedia
top
