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  • 8/9/2019 history of zero.docx

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    0 (number)

    0(zero; BrE: /z r/ or AmE: /ziro/) is both a number [1]and the numerical digit

    used to reresent that number in numerals! "t #ul$lls a central role in mathematics

    as the additi%e identit&o# the integers' real numbers' and man& other algebraic

    structures! As a digit' is used as a laceholder in lace %alue s&stems! ames #orthe number in Englishinclude zero' noughtor (*+) naught(/nt/)' nil' or , in

    conte-ts .here at least one adacent digit distinguishes it #rom the letter 00 , oh

    or o(/o/)! "n#ormal or slang terms #or zero include zilchand zip![2]Oughtor aught

    (/t/) has also been used historicall&![3]

    Contents

    1 Et&molog&

    2 4istor&

    o 2!1 Eg&t

    o 2!2 5esootamia

    o 2!3 "ndia

    o 2!6 7ambodia

    o 2!8 7hina

    o 2!9 "slamic .orld

    o 2! ree 5edie%al Euroe

    o 2!? Americas

    3 5athematics

    o 3!1 Elementar& algebra

    o 3!2 ther branches o# mathematics

    o 3!3 =elated mathematical terms

    6 @h&sics

    8 7hemistr&

    9 7omuter science

    ther $elds

    http://en.wikipedia.org/wiki/British_Englishhttp://en.wikipedia.org/wiki/American_Englishhttp://en.wikipedia.org/wiki/Numberhttp://en.wikipedia.org/wiki/0_(number)#cite_note-1http://en.wikipedia.org/wiki/Numerical_digithttp://en.wikipedia.org/wiki/Numeral_systemhttp://en.wikipedia.org/wiki/Mathematicshttp://en.wikipedia.org/wiki/Additive_identityhttp://en.wikipedia.org/wiki/Integerhttp://en.wikipedia.org/wiki/Real_numberhttp://en.wikipedia.org/wiki/Algebrahttp://en.wikipedia.org/wiki/Positional_notationhttp://en.wikipedia.org/wiki/Names_for_the_number_0_in_Englishhttp://en.wikipedia.org/wiki/Names_for_the_number_0_in_Englishhttp://en.wikipedia.org/wiki/Help:IPA_for_Englishhttp://en.wikipedia.org/wiki/Help:IPA_for_English#Keyhttp://en.wikipedia.org/wiki/Help:IPA_for_English#Keyhttp://en.wikipedia.org/wiki/Help:IPA_for_English#Keyhttp://en.wikipedia.org/wiki/Help:IPA_for_Englishhttp://en.wikipedia.org/wiki/Help:IPA_for_Englishhttp://en.wikipedia.org/wiki/Help:IPA_for_English#Keyhttp://en.wikipedia.org/wiki/Help:IPA_for_English#Keyhttp://en.wikipedia.org/wiki/Help:IPA_for_Englishhttp://en.wikipedia.org/wiki/0_(number)#cite_note-2http://en.wikipedia.org/wiki/Help:IPA_for_Englishhttp://en.wikipedia.org/wiki/Help:IPA_for_English#Keyhttp://en.wikipedia.org/wiki/Help:IPA_for_English#Keyhttp://en.wikipedia.org/wiki/Help:IPA_for_English#Keyhttp://en.wikipedia.org/wiki/Help:IPA_for_Englishhttp://en.wikipedia.org/wiki/0_(number)#cite_note-3http://en.wikipedia.org/wiki/0_(number)#Etymologyhttp://en.wikipedia.org/wiki/0_(number)#Historyhttp://en.wikipedia.org/wiki/0_(number)#Egypthttp://en.wikipedia.org/wiki/0_(number)#Mesopotamiahttp://en.wikipedia.org/wiki/0_(number)#Indiahttp://en.wikipedia.org/wiki/0_(number)#Cambodiahttp://en.wikipedia.org/wiki/0_(number)#Chinahttp://en.wikipedia.org/wiki/0_(number)#Islamic_worldhttp://en.wikipedia.org/wiki/0_(number)#Greeks_and_Romanshttp://en.wikipedia.org/wiki/0_(number)#Medieval_Europehttp://en.wikipedia.org/wiki/0_(number)#Americashttp://en.wikipedia.org/wiki/0_(number)#Mathematicshttp://en.wikipedia.org/wiki/0_(number)#Elementary_algebrahttp://en.wikipedia.org/wiki/0_(number)#Other_branches_of_mathematicshttp://en.wikipedia.org/wiki/0_(number)#Related_mathematical_termshttp://en.wikipedia.org/wiki/0_(number)#Physicshttp://en.wikipedia.org/wiki/0_(number)#Chemistryhttp://en.wikipedia.org/wiki/0_(number)#Computer_sciencehttp://en.wikipedia.org/wiki/0_(number)#Other_fieldshttp://en.wikipedia.org/wiki/American_Englishhttp://en.wikipedia.org/wiki/Numberhttp://en.wikipedia.org/wiki/0_(number)#cite_note-1http://en.wikipedia.org/wiki/Numerical_digithttp://en.wikipedia.org/wiki/Numeral_systemhttp://en.wikipedia.org/wiki/Mathematicshttp://en.wikipedia.org/wiki/Additive_identityhttp://en.wikipedia.org/wiki/Integerhttp://en.wikipedia.org/wiki/Real_numberhttp://en.wikipedia.org/wiki/Algebrahttp://en.wikipedia.org/wiki/Positional_notationhttp://en.wikipedia.org/wiki/Names_for_the_number_0_in_Englishhttp://en.wikipedia.org/wiki/Names_for_the_number_0_in_Englishhttp://en.wikipedia.org/wiki/Help:IPA_for_Englishhttp://en.wikipedia.org/wiki/Help:IPA_for_English#Keyhttp://en.wikipedia.org/wiki/Help:IPA_for_English#Keyhttp://en.wikipedia.org/wiki/Help:IPA_for_English#Keyhttp://en.wikipedia.org/wiki/Help:IPA_for_English#Keyhttp://en.wikipedia.org/wiki/Help:IPA_for_Englishhttp://en.wikipedia.org/wiki/Help:IPA_for_Englishhttp://en.wikipedia.org/wiki/Help:IPA_for_English#Keyhttp://en.wikipedia.org/wiki/Help:IPA_for_English#Keyhttp://en.wikipedia.org/wiki/Help:IPA_for_Englishhttp://en.wikipedia.org/wiki/0_(number)#cite_note-2http://en.wikipedia.org/wiki/Help:IPA_for_Englishhttp://en.wikipedia.org/wiki/Help:IPA_for_English#Keyhttp://en.wikipedia.org/wiki/Help:IPA_for_English#Keyhttp://en.wikipedia.org/wiki/Help:IPA_for_English#Keyhttp://en.wikipedia.org/wiki/Help:IPA_for_Englishhttp://en.wikipedia.org/wiki/0_(number)#cite_note-3http://en.wikipedia.org/wiki/0_(number)#Etymologyhttp://en.wikipedia.org/wiki/0_(number)#Historyhttp://en.wikipedia.org/wiki/0_(number)#Egypthttp://en.wikipedia.org/wiki/0_(number)#Mesopotamiahttp://en.wikipedia.org/wiki/0_(number)#Indiahttp://en.wikipedia.org/wiki/0_(number)#Cambodiahttp://en.wikipedia.org/wiki/0_(number)#Chinahttp://en.wikipedia.org/wiki/0_(number)#Islamic_worldhttp://en.wikipedia.org/wiki/0_(number)#Greeks_and_Romanshttp://en.wikipedia.org/wiki/0_(number)#Medieval_Europehttp://en.wikipedia.org/wiki/0_(number)#Americashttp://en.wikipedia.org/wiki/0_(number)#Mathematicshttp://en.wikipedia.org/wiki/0_(number)#Elementary_algebrahttp://en.wikipedia.org/wiki/0_(number)#Other_branches_of_mathematicshttp://en.wikipedia.org/wiki/0_(number)#Related_mathematical_termshttp://en.wikipedia.org/wiki/0_(number)#Physicshttp://en.wikipedia.org/wiki/0_(number)#Chemistryhttp://en.wikipedia.org/wiki/0_(number)#Computer_sciencehttp://en.wikipedia.org/wiki/0_(number)#Other_fieldshttp://en.wikipedia.org/wiki/British_English
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    > +&mbols and reresentations

    ? ear label

    1 +ee also

    11 otes

    12 =e#erences

    13 E-ternal lin]are used! +e%eral sorts

    ha%e seci$c .ords #or zero' such as nilin #ootball' lovein tennisand a duckin

    cric

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    History

    Egypt

    Ancient Eg&tian numerals.ere base 1! he& used hierogl&hs#or the digits and

    .ere not ositional! B& 16 B7E' the Eg&tians had a s&mbol #or zero in accounting

    te-ts! he s&mbol n#r' meaning beauti#ul' .as also used to indicate the base le%el in

    dra.ings o# tombs and &ramids and distances .ere measured relati%e to the base

    line as being abo%e or belo. this line![1]

    Mesopotamia

    B& the middle o# the 2nd millennium B7' the Bab&lonian mathematicshad asohisticated se-agesimalositional numeral s&stem! he lac< o# a ositional %alue

    (or zero) .as indicated b& a spacebet.een se-agesimal numerals! B& 3 B7' a

    unctuation s&mbol (t.o slanted .edges) .as cooted as a laceholderin the

    same Bab&lonian s&stem! "n a tablet unearthed at Lish(dating #rom about B7)'

    the scribe BMlbNnalu .rote his zeros .ith three hoo

    (3O9)' 6 and 26 (6O9)' loo

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    he concet o# zero as a number and not merel& a s&mbol or an emt& sace #or

    searation is attributed to "ndia' .here' b& the ?th centur& AP' ractical calculations

    .ere carried out using zero' .hich .as treated li AP' "ndian mathematician and astronomer Ar&abhatastated that 0sthVnVt

    sthVnaW daRaguXaW s&Vt;0[1?]i!e!' 0#rom lace to lace each is ten times the

    receding'0[1?][2].hich is the origin o# the modern decimalbased lace %alue

    notation![21][22]

    =ules o# Brahmaguta

    he rules go%erning the use o# zero aeared #or the $rst time in BrahmagutaFs

    boo< $rahmasputha Siddhanta%&he Opening o the 'niverse('[23].ritten in 92> AP!

    4ere Brahmaguta considers not onl& zero' but negati%e numbers' and the

    algebraic rules #or the elementar& oerations o# arithmetic .ith such numbers! "n

    some instances' his rules diKer #rom the modern standard! 4ere are the rules o#

    Brahmaguta:[23]

    he sum o# zero and a negati%e number is negati%e!

    he sum o# zero and a ositi%e number is ositi%e!

    he sum o# zero and zero is zero!

    he sum o# a ositi%e and a negati%e is their diKerence; or' i# their absolute

    %alues are eQual' zero!

    A ositi%e or negati%e number .hen di%ided b& zerois a #raction .ith the zero

    as denominator!

    http://en.wikipedia.org/wiki/0_(number)#cite_note-bourbaki46-12http://en.wikipedia.org/wiki/0_(number)#cite_note-ebcal-13http://en.wikipedia.org/wiki/Pingalahttp://en.wikipedia.org/wiki/Binary_numeral_systemhttp://en.wikipedia.org/wiki/Morse_codehttp://en.wikipedia.org/wiki/0_(number)#cite_note-14http://en.wikipedia.org/wiki/Sanskrithttp://en.wikipedia.org/wiki/%C5%9A%C5%ABnyat%C4%81http://en.wikipedia.org/wiki/0_(number)#cite_note-kim-15http://en.wikipedia.org/wiki/Sutrahttp://en.wikipedia.org/wiki/Exponentiationhttp://en.wikipedia.org/wiki/0_(number)#cite_note-kim-15http://en.wikipedia.org/wiki/Positional_notationhttp://en.wikipedia.org/wiki/Lokavibhagahttp://en.wikipedia.org/wiki/%C5%9A%C5%ABnyat%C4%81http://en.wikipedia.org/wiki/0_(number)#cite_note-16http://en.wikipedia.org/wiki/Glyphhttp://en.wikipedia.org/wiki/Chaturbhuj_Temple_(Orchha)http://en.wikipedia.org/wiki/Gwaliorhttp://en.wikipedia.org/wiki/0_(number)#cite_note-17http://en.wikipedia.org/wiki/0_(number)#cite_note-18http://en.wikipedia.org/wiki/0_(number)#cite_note-multiref1-11http://en.wikipedia.org/wiki/Aryabhatahttp://en.wikipedia.org/wiki/0_(number)#cite_note-Aryab-19http://en.wikipedia.org/wiki/0_(number)#cite_note-Aryab-19http://en.wikipedia.org/wiki/0_(number)#cite_note-20http://en.wikipedia.org/wiki/0_(number)#cite_note-21http://en.wikipedia.org/wiki/0_(number)#cite_note-22http://en.wikipedia.org/wiki/Brahmaguptahttp://en.wikipedia.org/wiki/Brahmasphutasiddhantahttp://en.wikipedia.org/wiki/0_(number)#cite_note-brahmagupta-23http://en.wikipedia.org/wiki/0_(number)#cite_note-brahmagupta-23http://en.wikipedia.org/wiki/Division_by_zerohttp://en.wikipedia.org/wiki/0_(number)#cite_note-bourbaki46-12http://en.wikipedia.org/wiki/0_(number)#cite_note-ebcal-13http://en.wikipedia.org/wiki/Pingalahttp://en.wikipedia.org/wiki/Binary_numeral_systemhttp://en.wikipedia.org/wiki/Morse_codehttp://en.wikipedia.org/wiki/0_(number)#cite_note-14http://en.wikipedia.org/wiki/Sanskrithttp://en.wikipedia.org/wiki/%C5%9A%C5%ABnyat%C4%81http://en.wikipedia.org/wiki/0_(number)#cite_note-kim-15http://en.wikipedia.org/wiki/Sutrahttp://en.wikipedia.org/wiki/Exponentiationhttp://en.wikipedia.org/wiki/0_(number)#cite_note-kim-15http://en.wikipedia.org/wiki/Positional_notationhttp://en.wikipedia.org/wiki/Lokavibhagahttp://en.wikipedia.org/wiki/%C5%9A%C5%ABnyat%C4%81http://en.wikipedia.org/wiki/0_(number)#cite_note-16http://en.wikipedia.org/wiki/Glyphhttp://en.wikipedia.org/wiki/Chaturbhuj_Temple_(Orchha)http://en.wikipedia.org/wiki/Gwaliorhttp://en.wikipedia.org/wiki/0_(number)#cite_note-17http://en.wikipedia.org/wiki/0_(number)#cite_note-18http://en.wikipedia.org/wiki/0_(number)#cite_note-multiref1-11http://en.wikipedia.org/wiki/Aryabhatahttp://en.wikipedia.org/wiki/0_(number)#cite_note-Aryab-19http://en.wikipedia.org/wiki/0_(number)#cite_note-Aryab-19http://en.wikipedia.org/wiki/0_(number)#cite_note-20http://en.wikipedia.org/wiki/0_(number)#cite_note-21http://en.wikipedia.org/wiki/0_(number)#cite_note-22http://en.wikipedia.org/wiki/Brahmaguptahttp://en.wikipedia.org/wiki/Brahmasphutasiddhantahttp://en.wikipedia.org/wiki/0_(number)#cite_note-brahmagupta-23http://en.wikipedia.org/wiki/0_(number)#cite_note-brahmagupta-23http://en.wikipedia.org/wiki/Division_by_zero
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    Yero di%ided b& a negati%e or ositi%e number is either zero or is e-ressed

    as a #raction .ith zero as numerator and the $nite Quantit& as denominator!

    Yero di%ided b& zero is zero!

    "n sa&ing zero di%ided b& zero is zero' Brahmaguta diKers #rom the modern

    osition! 5athematicians normall& do not assign a %alue to this' .hereas comuters

    and calculators sometimes assign a' .hich means 0not a number!0 5oreo%er'

    nonzero ositi%e or negati%e numbers .hen di%ided b& zero are either assigned no

    %alue' or a %alue o# unsigned in$nit&' ositi%e in$nit&' or negati%e in$nit&!

    Cambodia

    he number 98 in Lhmer numerals' #rom the +ambor inscritions in 9>3 AP! he

    earliest

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    te-t using a round s&mbol #or zero! [2>]7hinese authors had been #amiliar .ith the

    idea o# negati%e numbers b& the 4an P&nast&(2nd centur& 7E)' as seen in the &he

    -ine hapters on the +athematical )rt'[2?]much earlier than the $#teenth centur&

    .hen the& became .ell established in Euroe![2>]

    Islamic world

    he Arabiclanguage inheritance o# science .as largel& ree

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    s&stem other.ise using alhabetic ree< numerals! Because it .as used alone' not

    ust as a laceholder' this 4ellenistic zero.as erhas the $rst documented use o#

    a num"erzero in the ld orld! 4o.e%er' the ositions .ere usuall& limited to the

    #ractional art o# a number (called minutes' seconds' thirds' #ourths' etc!),the&

    .ere not used #or the integral art o# a number! "n later B&zantinemanuscrits o#

    @tolem&Fs Synta0is +athematica(also

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    adding certain things #rom m& o.n understanding and inserting also certain things

    #rom the niceties o# EuclidFs geometric art! " ha%e stri%en to comose this boo< in its

    entiret& as understandabl& as " could' di%iding it into $#teen chaters! Almost

    e%er&thing .hich " ha%e introduced " ha%e disla&ed .ith e-act roo#' in order that

    those #urther see 9 8 6 3 2 1!

    ith these nine $gures' and .ith the sign !!! an& number ma& be .ritten! [36][38]

    4ere Heonardo o# @isa uses the hrase 0sign 0' indicating it is li

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    he 5esoamerican Hong 7ount calendarde%eloed in southcentral 5e-ico and

    7entral America reQuired the use o# zero as a laceholder .ithin its %igesimal

    (base2) ositional numeral s&stem! 5an& diKerent gl&hs' including this artial

    Quatre#oil, ,.ere used as a zero s&mbol #or these Hong 7ount dates' the

    earliest o# .hich (on +tela 2 at 7hiaa de 7orzo' 7hiaas) has a date o# 39 B7!

    [39]

    +ince the eight earliest Hong 7ount dates aear outside the 5a&a homeland' [3]it is

    assumed that the use o# zero in the Americas redated the 5a&a and .as ossibl&

    the in%ention o# the lmecs! 5an& o# the earliest Hong 7ount dates .ere #ound

    .ithin the lmec heartland' although the lmec ci%ilization ended b& the 6th

    centur& B7' se%eral centuries be#ore the earliest

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    he number is neither ositi%e nor negati%e and aears in the middle o# a

    number line! "t is neither a rime numbernor a comosite number! "t cannot be

    rime because it has an in$nitenumber o# #actorsand cannot be comosite

    because it cannot be e-ressed b& multil&ing rime numbers ( must al.a&s be

    one o# the #actors)![6]Yero is' ho.e%er' e%en!

    he #ollo.ing are some basic (elementar&) rules #or dealing .ith the number !

    hese rules al& #or an& real or comle- number0' unless other.ise stated!

    Addition:0` J `0J0! hat is' is an identit& element(or neutral

    element) .ith resect to addition!

    +ubtraction:0 J0and 0J 0!

    5ultilication:0 J 0J !

    Pi%ision: 0J ' #or nonzero0! But 0is unde$ned' because has no

    multilicati%e in%erse(no real number multilied b& roduces 1)' aconseQuence o# the re%ious rule!

    E-onentiation:0J 0/0J 1' e-cet that the case0J ma& be le#t unde$ned

    in some conte-ts! Cor all ositi%e real0' 0J !

    he e-ression ' .hich ma& be obtained in an attemt to determine the limit o# an

    e-ression o# the #orm (0)g(0)as a result o# al&ing the limoerator indeendentl&

    to both oerands o# the #raction' is a socalled 0indeterminate #orm0! hat does not

    siml& mean that the limit sought is necessaril& unde$ned; rather' it means that the

    limit o# (0)g(0)' i# it e-ists' must be #ound b& another method' such as lF4italFs rule!

    he sum o# numbersis ' and the roduct o# numbersis 1! he #actorial

    e%aluates to 1!

    $ther branches of mathematics

    "n set theor&' is the cardinalit&o# the emt& set: i# one does not ha%e an&

    ales' then one has ales! "n #act' in certain a-iomatic de%eloments o#

    mathematics #rom set theor&' is defnedto be the emt& set! hen this is

    done' the emt& set is the Don eumann cardinal assignment#or a set .ith

    no elements' .hich is the emt& set! he cardinalit& #unction' alied to the

    emt& set' returns the emt& set as a %alue' thereb& assigning it elements!

    Also in set theor&' is the lo.est ordinal number' corresonding to the emt&

    set %ie.ed as a .ellordered set!

    "n roositional logic' ma& be used to denote the truth %alue#alse!

    http://en.wikipedia.org/wiki/Number_linehttp://en.wikipedia.org/wiki/Prime_numberhttp://en.wikipedia.org/wiki/Composite_numberhttp://en.wikipedia.org/wiki/Infinityhttp://en.wikipedia.org/wiki/Divisorhttp://en.wikipedia.org/wiki/0_(number)#cite_note-40http://en.wikipedia.org/wiki/Parity_(mathematics)http://en.wikipedia.org/wiki/Identity_elementhttp://en.wikipedia.org/wiki/Defined_and_undefinedhttp://en.wikipedia.org/wiki/Multiplicative_inversehttp://en.wikipedia.org/wiki/0_to_the_power_of_0http://en.wikipedia.org/wiki/Limit_of_a_functionhttp://en.wikipedia.org/wiki/Indeterminate_formhttp://en.wikipedia.org/wiki/L'H%C3%B4pital's_rulehttp://en.wikipedia.org/wiki/Empty_sumhttp://en.wikipedia.org/wiki/Empty_producthttp://en.wikipedia.org/wiki/Factorialhttp://en.wikipedia.org/wiki/Set_theoryhttp://en.wikipedia.org/wiki/Cardinalityhttp://en.wikipedia.org/wiki/Definitionhttp://en.wikipedia.org/wiki/Von_Neumann_cardinal_assignmenthttp://en.wikipedia.org/wiki/Ordinal_numberhttp://en.wikipedia.org/wiki/Well-orderhttp://en.wikipedia.org/wiki/Propositional_calculushttp://en.wikipedia.org/wiki/Truth_valuehttp://en.wikipedia.org/wiki/Number_linehttp://en.wikipedia.org/wiki/Prime_numberhttp://en.wikipedia.org/wiki/Composite_numberhttp://en.wikipedia.org/wiki/Infinityhttp://en.wikipedia.org/wiki/Divisorhttp://en.wikipedia.org/wiki/0_(number)#cite_note-40http://en.wikipedia.org/wiki/Parity_(mathematics)http://en.wikipedia.org/wiki/Identity_elementhttp://en.wikipedia.org/wiki/Defined_and_undefinedhttp://en.wikipedia.org/wiki/Multiplicative_inversehttp://en.wikipedia.org/wiki/0_to_the_power_of_0http://en.wikipedia.org/wiki/Limit_of_a_functionhttp://en.wikipedia.org/wiki/Indeterminate_formhttp://en.wikipedia.org/wiki/L'H%C3%B4pital's_rulehttp://en.wikipedia.org/wiki/Empty_sumhttp://en.wikipedia.org/wiki/Empty_producthttp://en.wikipedia.org/wiki/Factorialhttp://en.wikipedia.org/wiki/Set_theoryhttp://en.wikipedia.org/wiki/Cardinalityhttp://en.wikipedia.org/wiki/Definitionhttp://en.wikipedia.org/wiki/Von_Neumann_cardinal_assignmenthttp://en.wikipedia.org/wiki/Ordinal_numberhttp://en.wikipedia.org/wiki/Well-orderhttp://en.wikipedia.org/wiki/Propositional_calculushttp://en.wikipedia.org/wiki/Truth_value
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    "n abstract algebra' is commonl& used to denote a zero element' .hich is a

    neutral element#or addition (i# de$ned on the structure under consideration)

    and an absorbing element#or multilication (i# de$ned)!

    "n lattice theor&' ma& denote the bottom elemento# a bounded lattice!

    "n categor& theor&' is sometimes used to denote an initial obecto# a

    categor&!

    "n recursion theor&' can be used to denote theuring degreeo# the artial

    comutable #unctions!

    !elated mathematical terms

    A zero o# a #unctionis a oint0in the domain o# the #unction such that (0)

    J ! hen there are $nitel& man& zeros these are called the roots o# the

    #unction! his is related to zeroso# a holomorhic #unction!

    he zero #unction (or zero ma) on a domain is the constant #unction.ith

    as its onl& ossible outut %alue' i!e!' the #unction de$ned b& (0) J #or all

    0in ! A articular zero #unction is a zero morhismin categor& theor&; e!g!'

    a zero ma is the identit& in the additi%e grou o# #unctions! he determinant

    on nonin%ertible sQuare matricesis a zero ma!

    +e%eral branches o# mathematics ha%e zero elements' .hich generalise

    either the roert& `0J0' or the roert& O0J ' or both!

    %hysics

    he %alue zero la&s a secial role #or man& h&sical Quantities! Cor some

    Quantities' the zero le%el is naturall& distinguished #rom all other le%els' .hereas #or

    others it is more or less arbitraril& chosen! Cor e-amle' #or an absolute temerature

    (as measured in Lel%in) zerois the lo.est ossible %alue (negati%e temeraturesare

    de$ned but negati%e temerature s&stems are not actuall& colder)! his is in

    contrast to #or e-amle temeratures on the 7elsius scale' .here zero is arbitraril&

    de$ned to be at the #reezing ointo# .ater! 5easuring sound intensit& in decibelsor

    hons' the zero le%el is arbitraril& set at a re#erence %alue,#or e-amle' at a %alue

    #or the threshold o# hearing! "n h&sics' the zerooint energ&is the lo.est ossible

    energ& that a Quantum mechanicalh&sical s&stemma& ossess and is the energ&

    o# the ground stateo# the s&stem!

    Chemistry

    Yero has been roosed as the atomic numbero# the theoretical element

    tetraneutron! "t has been sho.n that a cluster o# #our neutronsma& be stable

    enough to be considered an atomin its o.n right! his .ould create an element

    .ith no rotonsand no charge on its nucleus!

    http://en.wikipedia.org/wiki/Abstract_algebrahttp://en.wikipedia.org/wiki/Zero_element_(disambiguation)http://en.wikipedia.org/wiki/Identity_elementhttp://en.wikipedia.org/wiki/Absorbing_elementhttp://en.wikipedia.org/wiki/Lattice_(order)http://en.wikipedia.org/wiki/Greatest_elementhttp://en.wikipedia.org/wiki/Lattice_(order)http://en.wikipedia.org/wiki/Category_theoryhttp://en.wikipedia.org/wiki/Initial_and_terminal_objectshttp://en.wikipedia.org/wiki/Category_(mathematics)http://en.wikipedia.org/wiki/Recursion_theoryhttp://en.wikipedia.org/wiki/Turing_degreehttp://en.wikipedia.org/wiki/Computable_functionhttp://en.wikipedia.org/wiki/Computable_functionhttp://en.wikipedia.org/wiki/Root_of_a_functionhttp://en.wikipedia.org/wiki/Zero_(complex_analysis)http://en.wikipedia.org/wiki/Holomorphic_functionhttp://en.wikipedia.org/wiki/Constant_functionhttp://en.wikipedia.org/wiki/Zero_morphismhttp://en.wikipedia.org/wiki/Determinanthttp://en.wikipedia.org/wiki/Matrix_(mathematics)http://en.wikipedia.org/wiki/Zero_element_(disambiguation)http://en.wikipedia.org/wiki/Thermodynamic_temperaturehttp://en.wikipedia.org/wiki/Kelvinhttp://en.wikipedia.org/wiki/Absolute_zerohttp://en.wikipedia.org/wiki/Negative_temperaturehttp://en.wikipedia.org/wiki/Melting_pointhttp://en.wikipedia.org/wiki/Decibelhttp://en.wikipedia.org/wiki/Phonhttp://en.wikipedia.org/wiki/Physicshttp://en.wikipedia.org/wiki/Zero-point_energyhttp://en.wikipedia.org/wiki/Quantum_mechanicshttp://en.wikipedia.org/wiki/Physical_systemhttp://en.wikipedia.org/wiki/Stationary_statehttp://en.wikipedia.org/wiki/Atomic_numberhttp://en.wikipedia.org/wiki/Tetraneutronhttp://en.wikipedia.org/wiki/Neutronhttp://en.wikipedia.org/wiki/Atomhttp://en.wikipedia.org/wiki/Chemical_elementhttp://en.wikipedia.org/wiki/Protonhttp://en.wikipedia.org/wiki/Atomic_nucleushttp://en.wikipedia.org/wiki/Abstract_algebrahttp://en.wikipedia.org/wiki/Zero_element_(disambiguation)http://en.wikipedia.org/wiki/Identity_elementhttp://en.wikipedia.org/wiki/Absorbing_elementhttp://en.wikipedia.org/wiki/Lattice_(order)http://en.wikipedia.org/wiki/Greatest_elementhttp://en.wikipedia.org/wiki/Lattice_(order)http://en.wikipedia.org/wiki/Category_theoryhttp://en.wikipedia.org/wiki/Initial_and_terminal_objectshttp://en.wikipedia.org/wiki/Category_(mathematics)http://en.wikipedia.org/wiki/Recursion_theoryhttp://en.wikipedia.org/wiki/Turing_degreehttp://en.wikipedia.org/wiki/Computable_functionhttp://en.wikipedia.org/wiki/Computable_functionhttp://en.wikipedia.org/wiki/Root_of_a_functionhttp://en.wikipedia.org/wiki/Zero_(complex_analysis)http://en.wikipedia.org/wiki/Holomorphic_functionhttp://en.wikipedia.org/wiki/Constant_functionhttp://en.wikipedia.org/wiki/Zero_morphismhttp://en.wikipedia.org/wiki/Determinanthttp://en.wikipedia.org/wiki/Matrix_(mathematics)http://en.wikipedia.org/wiki/Zero_element_(disambiguation)http://en.wikipedia.org/wiki/Thermodynamic_temperaturehttp://en.wikipedia.org/wiki/Kelvinhttp://en.wikipedia.org/wiki/Absolute_zerohttp://en.wikipedia.org/wiki/Negative_temperaturehttp://en.wikipedia.org/wiki/Melting_pointhttp://en.wikipedia.org/wiki/Decibelhttp://en.wikipedia.org/wiki/Phonhttp://en.wikipedia.org/wiki/Physicshttp://en.wikipedia.org/wiki/Zero-point_energyhttp://en.wikipedia.org/wiki/Quantum_mechanicshttp://en.wikipedia.org/wiki/Physical_systemhttp://en.wikipedia.org/wiki/Stationary_statehttp://en.wikipedia.org/wiki/Atomic_numberhttp://en.wikipedia.org/wiki/Tetraneutronhttp://en.wikipedia.org/wiki/Neutronhttp://en.wikipedia.org/wiki/Atomhttp://en.wikipedia.org/wiki/Chemical_elementhttp://en.wikipedia.org/wiki/Protonhttp://en.wikipedia.org/wiki/Atomic_nucleus
  • 8/9/2019 history of zero.docx

    12/13

    As earl& as 1?29' @ro#essor Andreas %on AntrooK coined the term neutronium#or a

    conectured #orm o# mattermade u o# neutrons .ith no rotons' .hich he laced

    as the chemical element o# atomic number zero at the head o# his ne. %ersion o#

    the eriodic table! "t .as subseQuentl& laced as a noble gas in the middle o#

    se%eral siral reresentations o# the eriodic s&stem #or classi#&ing the chemical

    elements!

    Computer science

    he most common ractice throughout human histor& has been to start counting at

    one' and this is the ractice in earl& classic comuter sciencerogramming

    languages such as Cortranand 7BH! 4o.e%er' in the late 1?8s H"+@introduced

    zerobased numbering#or arra&s .hile Algol 8>introduced comletel& Ie-ible

    basing #or arra& subscrits (allo.ing an& ositi%e' negati%e' or zero integer as base

    #or arra& subscrits)' and most subseQuent rogramming languages adoted one or

    other o# these ositions! Cor e-amle' the elements o# an arra&are numbered

    starting #rom in 7' so that #or an arra& o# nitems the seQuence o# arra& indicesruns #rom to n1! his ermits an arra& elementFs location to be calculated b&

    adding the inde- directl& to address o# the arra&' .hereas 1 based languages

    recalculate the arra&Fs base address to be the osition one element be#ore the

    $rst!

    here can be con#usion bet.een and 1 based inde-ing' #or e-amle Ua%aFsUPB7

    inde-es arameters #rom 1 althoughUa%aitsel# uses based inde-ing!

    "n databases' it is ossible #or a $eld not to ha%e a %alue! "t is then said to ha%e a

    null %alue! Cor numeric $elds it is not the %alue zero! Cor te-t $elds this is not blan


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