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<title>Zero</title>
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<wx:section level="1" title="Zero" id="wxsec1"><h1 class="pagetitle" id="wx1">Zero</h1>
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<div id="wx_categorylinks">
<a href="/wit/index.php?title=Speciale:Categories&amp;article=Zero" title="Speciale:Categories" wx:linktype="known" wx:pagename="Speciale:Categories" id="wx2">Categoria</a>: <span dir="ltr" id="wx3"><a href="/wit/Categoria:Numeri_interi" title="Categoria:Numeri interi" wx:linktype="known" wx:pagename="Categoria:Numeri_interi" wx:page_id="43546" id="wx4">Numeri interi</a></span></div>
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Altre lingue: <a href="http://ar.wikipedia.org/wiki/0_%28%D8%B9%D8%AF%D8%AF%29" class="external" wx:linktype="interwiki" wx:pagename="ar:0_(عدد)" id="wx5">العربية</a> | <a href="http://bg.wikipedia.org/wiki/%D0%9D%D1%83%D0%BB%D0%B0" class="external" wx:linktype="interwiki" wx:pagename="bg:Нула" id="wx6">Български</a> | <a href="http://ca.wikipedia.org/wiki/Zero" class="external" wx:linktype="interwiki" wx:pagename="ca:Zero" id="wx7">Català</a> | <a href="http://cs.wikipedia.org/wiki/Nula" class="external" wx:linktype="interwiki" wx:pagename="cs:Nula" id="wx8">Česky</a> | <a href="http://da.wikipedia.org/wiki/0_%28tal%29" class="external" wx:linktype="interwiki" wx:pagename="da:0_(tal)" id="wx9">Dansk</a> | <a href="http://de.wikipedia.org/wiki/Null" class="external" wx:linktype="interwiki" wx:pagename="de:Null" id="wx10">Deutsch</a> | <a href="http://el.wikipedia.org/wiki/%CE%9C%CE%B7%CE%B4%CE%AD%CE%BD" class="external" wx:linktype="interwiki" wx:pagename="el:Μηδέν" id="wx11">Ελληνικά</a> | <a href="http://en.wikipedia.org/wiki/0_%28number%29" class="external" wx:linktype="interwiki" wx:pagename="en:0_(number)" id="wx12">English</a> | <a href="http://eo.wikipedia.org/wiki/Nulo" class="external" wx:linktype="interwiki" wx:pagename="eo:Nulo" id="wx13">Esperanto</a> | <a href="http://es.wikipedia.org/wiki/Cero" class="external" wx:linktype="interwiki" wx:pagename="es:Cero" id="wx14">Español</a> | <a href="http://et.wikipedia.org/wiki/Null" class="external" wx:linktype="interwiki" wx:pagename="et:Null" id="wx15">Eesti</a> | <a href="http://eu.wikipedia.org/wiki/Zero" class="external" wx:linktype="interwiki" wx:pagename="eu:Zero" id="wx16">Euskara</a> | <a href="http://fa.wikipedia.org/wiki/%DB%B0_%28%D8%B9%D8%AF%D8%AF%29" class="external" wx:linktype="interwiki" wx:pagename="fa:۰_(عدد)" id="wx17">فارسی</a> | <a href="http://fi.wikipedia.org/wiki/0_%28luku%29" class="external" wx:linktype="interwiki" wx:pagename="fi:0_(luku)" id="wx18">Suomi</a> | <a href="http://fr.wikipedia.org/wiki/Z%C3%A9ro" class="external" wx:linktype="interwiki" wx:pagename="fr:Zéro" id="wx19">Français</a> | <a href="http://fur.wikipedia.org/wiki/0_%28numar%29" class="external" wx:linktype="interwiki" wx:pagename="fur:0_(numar)" id="wx20">Furlan</a> | <a href="http://gl.wikipedia.org/wiki/Cero" class="external" wx:linktype="interwiki" wx:pagename="gl:Cero" id="wx21">Galego</a> | <a href="http://he.wikipedia.org/wiki/0_%28%D7%9E%D7%A1%D7%A4%D7%A8%29" class="external" wx:linktype="interwiki" wx:pagename="he:0_(מספר)" id="wx22">עברית</a> | <a href="http://hi.wikipedia.org/wiki/%E0%A4%B6%E0%A5%82%E0%A4%A8%E0%A5%8D%E0%A4%AF" class="external" wx:linktype="interwiki" wx:pagename="hi:शून्य" id="wx23">हिन्दी</a> | <a href="http://ht.wikipedia.org/wiki/0_%28nonm%29" class="external" wx:linktype="interwiki" wx:pagename="ht:0_(nonm)" id="wx24">Krèyol ayisyen</a> | <a href="http://hu.wikipedia.org/wiki/0_%28sz%C3%A1m%29" class="external" wx:linktype="interwiki" wx:pagename="hu:0_(szám)" id="wx25">Magyar</a> | <a href="http://ia.wikipedia.org/wiki/0_%28numero%29" class="external" wx:linktype="interwiki" wx:pagename="ia:0_(numero)" id="wx26">Interlingua</a> | <a href="http://io.wikipedia.org/wiki/Zero" class="external" wx:linktype="interwiki" wx:pagename="io:Zero" id="wx27">Ido</a> | <a href="http://is.wikipedia.org/wiki/N%C3%BAll" class="external" wx:linktype="interwiki" wx:pagename="is:Núll" id="wx28">Íslenska</a> | <a href="http://ja.wikipedia.org/wiki/0" class="external" wx:linktype="interwiki" wx:pagename="ja:0" id="wx29">日本語</a> | <a href="http://ka.wikipedia.org/wiki/%E1%83%9C%E1%83%A3%E1%83%9A%E1%83%98" class="external" wx:linktype="interwiki" wx:pagename="ka:ნული" id="wx30">ქართული</a> | <a href="http://ko.wikipedia.org/wiki/0" class="external" wx:linktype="interwiki" wx:pagename="ko:0" id="wx31">한국어</a> | <a href="http://ku.wikipedia.org/wiki/Sifir_%28hejmar%29" class="external" wx:linktype="interwiki" wx:pagename="ku:Sifir_(hejmar)" id="wx32">Kurdî / كوردي</a> | <a href="http://la.wikipedia.org/wiki/0" class="external" wx:linktype="interwiki" wx:pagename="la:0" id="wx33">Latina</a> | <a href="http://lmo.wikipedia.org/wiki/N%C3%BCmar_0" class="external" wx:linktype="interwiki" wx:pagename="lmo:Nümar_0" id="wx34">Lumbaart</a> | <a href="http://lt.wikipedia.org/wiki/0_%28skai%C4%8Dius%29" class="external" wx:linktype="interwiki" wx:pagename="lt:0_(skaičius)" id="wx35">Lietuvių</a> | <a href="http://lv.wikipedia.org/wiki/Nulle" class="external" wx:linktype="interwiki" wx:pagename="lv:Nulle" id="wx36">Latviešu</a> | <a href="http://ml.wikipedia.org/wiki/%E0%B4%AA%E0%B5%82%E0%B4%9C%E0%B5%8D%E0%B4%AF%E0%B4%82" class="external" wx:linktype="interwiki" wx:pagename="ml:പൂജ്യം" id="wx37">മലയാളം</a> | <a href="http://ms.wikipedia.org/wiki/0_%28nombor%29" class="external" wx:linktype="interwiki" wx:pagename="ms:0_(nombor)" id="wx38">Bahasa Melayu</a> | <a href="http://nds-nl.wikipedia.org/wiki/0_%28getal%29" class="external" wx:linktype="interwiki" wx:pagename="nds-nl:0_(getal)" id="wx39">Nedersaksisch</a> | <a href="http://new.wikipedia.org/wiki/%E0%A4%B6%E0%A5%82%E0%A4%A8%E0%A5%8D%E0%A4%AF" class="external" wx:linktype="interwiki" wx:pagename="new:शून्य" id="wx40">नेपाल भाषा</a> | <a href="http://nl.wikipedia.org/wiki/0_%28getal%29" class="external" wx:linktype="interwiki" wx:pagename="nl:0_(getal)" id="wx41">Nederlands</a> | <a href="http://nn.wikipedia.org/wiki/0" class="external" wx:linktype="interwiki" wx:pagename="nn:0" id="wx42">Norsk (nynorsk)</a> | <a href="http://no.wikipedia.org/wiki/Null" class="external" wx:linktype="interwiki" wx:pagename="no:Null" id="wx43">Norsk (bokmål)</a> | <a href="http://pl.wikipedia.org/wiki/0_%28liczba%29" class="external" wx:linktype="interwiki" wx:pagename="pl:0_(liczba)" id="wx44">Polski</a> | <a href="http://pt.wikipedia.org/wiki/Zero" class="external" wx:linktype="interwiki" wx:pagename="pt:Zero" id="wx45">Português</a> | <a href="http://qu.wikipedia.org/wiki/Ch%27usaq_yupay" class="external" wx:linktype="interwiki" wx:pagename="qu:Ch'usaq_yupay" id="wx46">Runa Simi</a> | <a href="http://ro.wikipedia.org/wiki/0_%28cifr%C4%83%29" class="external" wx:linktype="interwiki" wx:pagename="ro:0_(cifră)" id="wx47">Română</a> | <a href="http://ru.wikipedia.org/wiki/0_%28%D1%87%D0%B8%D1%81%D0%BB%D0%BE%29" class="external" wx:linktype="interwiki" wx:pagename="ru:0_(число)" id="wx48">Русский</a> | <a href="http://rw.wikipedia.org/wiki/Obusa" class="external" wx:linktype="interwiki" wx:pagename="rw:Obusa" id="wx49">Kinyarwanda</a> | <a href="http://simple.wikipedia.org/wiki/Zero" class="external" wx:linktype="interwiki" wx:pagename="simple:Zero" id="wx50">Simple English</a> | <a href="http://sk.wikipedia.org/wiki/0_%28%C4%8D%C3%ADslo%29" class="external" wx:linktype="interwiki" wx:pagename="sk:0_(číslo)" id="wx51">Slovenčina</a> | <a href="http://sl.wikipedia.org/wiki/0" class="external" wx:linktype="interwiki" wx:pagename="sl:0" id="wx52">Slovenščina</a> | <a href="http://sr.wikipedia.org/wiki/0_%28%D0%B1%D1%80%D0%BE%D1%98%29" class="external" wx:linktype="interwiki" wx:pagename="sr:0_(број)" id="wx53">Српски / Srpski</a> | <a href="http://sv.wikipedia.org/wiki/0_%28tal%29" class="external" wx:linktype="interwiki" wx:pagename="sv:0_(tal)" id="wx54">Svenska</a> | <a href="http://ta.wikipedia.org/wiki/%E0%AE%9A%E0%AF%82%E0%AE%A9%E0%AE%BF%E0%AE%AF%E0%AE%AE%E0%AF%81%E0%AE%AE%E0%AF%8D_%E0%AE%87%E0%AE%9F%E0%AE%AE%E0%AE%A4%E0%AE%BF%E0%AE%AA%E0%AF%8D%E0%AE%AA%E0%AF%81%E0%AE%A4%E0%AF%8D_%E0%AE%A4%E0%AE%BF%E0%AE%9F%E0%AF%8D%E0%AE%9F%E0%AE%AE%E0%AF%81%E0%AE%AE%E0%AF%8D" class="external" wx:linktype="interwiki" wx:pagename="ta:சூனியமும்_இடமதிப்புத்_திட்டமும்" id="wx55">தமிழ்</a> | <a href="http://te.wikipedia.org/wiki/%E0%B0%B8%E0%B1%81%E0%B0%A8%E0%B1%8D%E0%B0%A8" class="external" wx:linktype="interwiki" wx:pagename="te:సున్న" id="wx56">తెలుగు</a> | <a href="http://th.wikipedia.org/wiki/0" class="external" wx:linktype="interwiki" wx:pagename="th:0" id="wx57">ไทย</a> | <a href="http://tl.wikipedia.org/wiki/0_%28bilang%29" class="external" wx:linktype="interwiki" wx:pagename="tl:0_(bilang)" id="wx58">Tagalog</a> | <a href="http://tr.wikipedia.org/wiki/S%C4%B1f%C4%B1r" class="external" wx:linktype="interwiki" wx:pagename="tr:Sıfır" id="wx59">Türkçe</a> | <a href="http://uk.wikipedia.org/wiki/0_%28%D1%87%D0%B8%D1%81%D0%BB%D0%BE%29" class="external" wx:linktype="interwiki" wx:pagename="uk:0_(число)" id="wx60">Українська</a> | <a href="http://vi.wikipedia.org/wiki/0" class="external" wx:linktype="interwiki" wx:pagename="vi:0" id="wx61">Tiếng Việt</a> | <a href="http://vls.wikipedia.org/wiki/0_%28getal%29" class="external" wx:linktype="interwiki" wx:pagename="vls:0_(getal)" id="wx62">West-Vlaoms</a> | <a href="http://wo.wikipedia.org/wiki/Tus" class="external" wx:linktype="interwiki" wx:pagename="wo:Tus" id="wx63">Wollof</a> | <a href="http://xh.wikipedia.org/wiki/Iqanda" class="external" wx:linktype="interwiki" wx:pagename="xh:Iqanda" id="wx64">isiXhosa</a> | <a href="http://yi.wikipedia.org/wiki/0_%28%D7%A0%D7%95%D7%9E%D7%A2%D7%A8%29" class="external" wx:linktype="interwiki" wx:pagename="yi:0_(נומער)" id="wx65">ייִדיש</a> | <a href="http://zh.wikipedia.org/wiki/0" class="external" wx:linktype="interwiki" wx:pagename="zh:0" id="wx66">中文</a> | <a href="http://zh-yue.wikipedia.org/wiki/0" class="external" wx:linktype="interwiki" wx:pagename="zh-yue:0" id="wx67">粵語</a></div>
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<p id="wx68">altri usi</p>
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<a href="/wit/Zero_%28disambigua%29" title="Zero (disambigua)" wx:linktype="known" wx:pagename="Zero_(disambigua)" wx:page_id="12088" id="wx69">zero (disambigua)</a>
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<wx:templatearguments for="wx_t2"><wx:argument name="1">
<p id="wx70">Le nove cifre degli indiani sono queste: <a href="/wit/Nove" title="Nove" wx:linktype="known" wx:pagename="Nove" wx:page_id="65459" id="wx71">9</a> <a href="/wit/Otto" title="Otto" wx:linktype="known" wx:pagename="Otto" wx:page_id="1170197" id="wx72">8</a> <a href="/wit/Sette" title="Sette" wx:linktype="known" wx:pagename="Sette" wx:page_id="1170275" id="wx73">7</a> <a href="/wit/Sei" title="Sei" wx:linktype="known" wx:pagename="Sei" wx:page_id="1170218" id="wx74">6</a> <a href="/wit/Cinque" title="Cinque" wx:linktype="known" wx:pagename="Cinque" wx:page_id="1169030" id="wx75">5</a> <a href="/wit/Quattro" title="Quattro" wx:linktype="known" wx:pagename="Quattro" wx:page_id="1170216" id="wx76">4</a> <a href="/wit/Tre" title="Tre" wx:linktype="known" wx:pagename="Tre" wx:page_id="1170240" id="wx77">3</a> <a href="/wit/Due" title="Due" wx:linktype="known" wx:pagename="Due" wx:page_id="65466" id="wx78">2</a> <a href="/wit/Uno" title="Uno" wx:linktype="known" wx:pagename="Uno" wx:page_id="1169048" id="wx79">1</a>. Con queste nove cifre, e con questo simbolo: 0, che gli arabi chiamano <i id="wx80">zephir</i>, si può scrivere qualsiasi numero, come si vedrà più avanti.</p>
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<a href="/wit/Leonardo_Fibonacci" title="Leonardo Fibonacci" wx:linktype="known" wx:pagename="Leonardo_Fibonacci" wx:page_id="16218" id="wx81">Leonardo Fibonacci</a>
<p id="wx82">, <i id="wx83"><a href="/wit/Liber_abaci" title="Liber abaci" wx:linktype="known" wx:pagename="Liber_abaci" wx:page_id="79347" id="wx84">Liber abaci</a></i>, inizio del primo capitolo.</p>
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<p id="wx85">la</p>
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<i id="wx86">Novem figur<b id="wx87">e</b> indorum h<b id="wx88">e</b> sunt <a href="/wit/Nove" title="Nove" wx:linktype="known" wx:pagename="Nove" wx:page_id="65459" id="wx89">9</a> <a href="/wit/Otto" title="Otto" wx:linktype="known" wx:pagename="Otto" wx:page_id="1170197" id="wx90">8</a> <a href="/wit/Sette" title="Sette" wx:linktype="known" wx:pagename="Sette" wx:page_id="1170275" id="wx91">7</a> <a href="/wit/Sei" title="Sei" wx:linktype="known" wx:pagename="Sei" wx:page_id="1170218" id="wx92">6</a> <a href="/wit/Cinque" title="Cinque" wx:linktype="known" wx:pagename="Cinque" wx:page_id="1169030" id="wx93">5</a> <a href="/wit/Quattro" title="Quattro" wx:linktype="known" wx:pagename="Quattro" wx:page_id="1170216" id="wx94">4</a> <a href="/wit/Tre" title="Tre" wx:linktype="known" wx:pagename="Tre" wx:page_id="1170240" id="wx95">3</a> <a href="/wit/Due" title="Due" wx:linktype="known" wx:pagename="Due" wx:page_id="65466" id="wx96">2</a> <a href="/wit/Uno" title="Uno" wx:linktype="known" wx:pagename="Uno" wx:page_id="1169048" id="wx97">1</a>. Cum his itaque novem figuris, et cum hoc signo 0, quod arabice</i>
<p id="wx98">zephirum <i id="wx99">appellatur, scribitur quilibet numerus, ut inferius demonstratur.</i></p>
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<p id="wx100">0</p>
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<p id="wx101">Zero</p>
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<p id="wx102">Zeresimo, -a</p>
</wx:argument><wx:argument name="Scomposizionefattori">
<p id="wx103">N/A</p>
</wx:argument><wx:argument name="Numeroromano">
<p id="wx104">N/A</p>
</wx:argument><wx:argument name="Numerobinario">
<p id="wx105">0</p>
</wx:argument><wx:argument name="Numeroesadecimale">
<p id="wx106">0</p>
</wx:argument><wx:argument name="Funzioneeulero">
<p id="wx107">0</p>
</wx:argument><wx:argument name="Funzionetau">
<p id="wx108">n.d.</p>
</wx:argument><wx:argument name="Funzionesigma">
<p id="wx109">n.d.</p>
</wx:argument><wx:argument name="Funzionepi">
<p id="wx110">0</p>
</wx:argument><wx:argument name="Funzionemobius">
<p id="wx111">1</p>
</wx:argument><wx:argument name="Funzionemertens">
<p id="wx112">0</p>
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<wx:templatearguments for="wx_t4"><wx:argument name="1">
<p id="wx113">Sistema di numerazione maya</p>
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<p id="wx114">matematica</p>
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