<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd" [<!ENTITY mathml "http://www.w3.org/1998/Math/MathML">]>


<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">

<head>
  <base href="http://www.zentralblatt-math.org/zbmath/" />
  <meta http-equiv="content-type" content="application/xml; charset=utf-8" />
  <meta http-equiv="language" content="DE" />
  <title>Zentralblatt MATH</title>
  <meta name="description" content="" />
  <meta name="keywords" content="" />
  <meta name="classification" content="" />
  <meta name="rating" content="" />
  <meta name="distribution" content="" />
  <meta name="author" content="" />
  <meta name="copyright" content="" />
  <meta name="reply-to" content="" />
  <meta name="robots" content="" />
  <meta name="revisit-after" content="" />
  <script type="text/javascript" src="http://www.zentralblatt-math.org/zbmath/javascript/misc/jquery.js"></script>
  <script type="text/javascript" src="http://www.zentralblatt-math.org/zbmath/javascript/misc/ajax.js"></script>
  <script type="text/javascript" src="http://www.zentralblatt-math.org/zbmath/scripts.js"></script>
  <link rel="stylesheet" type="text/css" href="http://www.zentralblatt-math.org/zbmath/styles.css" />
  <link rel="stylesheet" type="text/css" href="http://www.zentralblatt-math.org/zbmath/layout.css" />
<!--[if IE]>
  <link rel="stylesheet" type="text/css" href="http://www.zentralblatt-math.org/zbmath/ie.css" />
<![endif]-->
  <link rel="icon" href="http://www.zentralblatt-math.org/zbmath/zbmath.ico" type="image/ico" />
</head>

<body>
    <div class="clear"></div>
<div id="page">
<div id="top">
  <div id="logo"><div class="alt"></div><a href="http://www.zentralblatt-math.org/zbmath/"><img src="http://www.zentralblatt-math.org/zbmath/images/logo.png" alt="" /></a></div>
  <div id="navigation">
  <a href="http://www.zentralblatt-math.org/zbmath/./" onmouseover="$('#navi1').attr('src','http://www.zentralblatt-math.org/zbmath/images/square_a.gif');" onmouseout="$('#navi1').attr('src','http://www.zentralblatt-math.org/zbmath/images/square.gif');"><img id="navi1" src="http://www.zentralblatt-math.org/zbmath/images/square.gif" alt="" />&nbsp;Startseite</a>
  <a href="http://www.zentralblatt-math.org/zbmath/classification/" onmouseover="$('#navi2').attr('src','http://www.zentralblatt-math.org/zbmath/images/square_a.gif');" onmouseout="$('#navi2').attr('src','http://www.zentralblatt-math.org/zbmath/images/square.gif');"><img id="navi2" src="http://www.zentralblatt-math.org/zbmath/images/square.gif" alt="" />&nbsp;Klassifikation</a>
  <a href="http://www.zentralblatt-math.org/zbmath/authors/" onmouseover="$('#navi3').attr('src','http://www.zentralblatt-math.org/zbmath/images/square_a.gif');" onmouseout="$('#navi3').attr('src','http://www.zentralblatt-math.org/zbmath/images/square.gif');"><img id="navi3" src="http://www.zentralblatt-math.org/zbmath/images/square.gif" alt="" />&nbsp;Authoren</a>
  <a href="http://www.zentralblatt-math.org/zbmath/journals/" onmouseover="$('#navi4').attr('src','http://www.zentralblatt-math.org/zbmath/images/square_a.gif');" onmouseout="$('#navi4').attr('src','http://www.zentralblatt-math.org/zbmath/images/square.gif');"><img id="navi4" src="http://www.zentralblatt-math.org/zbmath/images/square.gif" alt="" />&nbsp;Journale</a>
  <a href="http://www.zentralblatt-math.org/reviewer/en/" onmouseover="$('#navi5').attr('src','http://www.zentralblatt-math.org/zbmath/images/square_a.gif');" onmouseout="$('#navi5').attr('src','http://www.zentralblatt-math.org/zbmath/images/square.gif');"><img id="navi5" src="http://www.zentralblatt-math.org/zbmath/images/square.gif" alt="" />&nbsp;Referenten-Service</a>
  <a href="http://www.zentralblatt-math.org/zbmath/subscription/" onmouseover="$('#navi6').attr('src','http://www.zentralblatt-math.org/zbmath/images/square_a.gif');" onmouseout="$('#navi6').attr('src','http://www.zentralblatt-math.org/zbmath/images/square.gif');"><img id="navi6" src="http://www.zentralblatt-math.org/zbmath/images/square.gif" alt="" />&nbsp;Abonnement</a>
</div>
  <div id="claim">Suche in etwa 3 Millionen Reviews aus 150 Jahren Mathematik</div>
  </div>
<div class="clear"></div>
<div id="line">
  <div id="path"><img src="http://www.zentralblatt-math.org/zbmath/images/path.gif" alt="" /><a href="http://www.zentralblatt-math.org/zbmath/">Startseite</a></div>
  <div id="contact"><a href="mailto:"><img src="http://www.zentralblatt-math.org/zbmath/images/email.gif" alt="" />Kontakt</a>
<a href="javascript:window.print();" onclick="window.print();return false;"><img src="http://www.zentralblatt-math.org/zbmath/images/print.gif" alt="" />Drucken</a>
</div>
</div>
<div class="clear"></div>
<form class="form" action="http://www.zentralblatt-math.org/zbmath/search/" method="post">
<div id="query">
  <div id="form"><div id="form_any">
  <label class="form" for="any">Überall</label><br />
  <input class="text" type="text" id="any" name="any" value="" />
</div>
<div id="form_au">
  <label class="form" for="au">Autor</label><br />
  <input class="text" type="text" id="au" name="au" value="" />
</div>
<div id="form_ti">
  <label class="form" for="ti">Titel</label><br />
  <input class="text" type="text" id="ti" name="ti" value="" />
</div>
<div id="form_so">
  <label class="form" for="so">Quelle</label><br />
  <input class="text" type="text" id="so" name="so" value="" />
</div>
<div id="form_py">
  <label class="form" for="py">Jahr</label><br />
  <input class="text" type="text" id="py" name="py" value="" />
</div>
<div id="form_go">
  <label class="form"><a class="meta" href="" onclick="$('input[name=\'any\']')[0].value='';$('input[name=\'au\']')[0].value='';$('input[name=\'ti\']')[0].value='';$('input[name=\'so\']')[0].value='';$('input[name=\'py\']')[0].value='';;return false;">Löschen</a>&nbsp;</label><br />
  <input class="submit" type="submit" name="go" value="  Ok  " />
</div>
<div class="clear"></div>
</div>
  <div id="help"><a href="http://www.zentralblatt-math.org/zbmath/help/" onmouseover="$('#help_help').attr('src','http://www.zentralblatt-math.org/zbmath/images/arrow_a.gif');" onmouseout="$('#help_help').attr('src','http://www.zentralblatt-math.org/zbmath/images/arrow.gif');"><img id="help_help" src="http://www.zentralblatt-math.org/zbmath/images/arrow.gif" alt="" /> Allgemeine Hilfe</a><br />
  <a href="http://www.zentralblatt-math.org/zbmath/advanced/" onmouseover="$('#help_advanced').attr('src','http://www.zentralblatt-math.org/zbmath/images/arrow_a.gif');" onmouseout="$('#help_advanced').attr('src','http://www.zentralblatt-math.org/zbmath/images/arrow.gif');"><img id="help_advanced" src="http://www.zentralblatt-math.org/zbmath/images/arrow.gif" alt="" /> Erweiterte Suche</a>
</div>
  <img id="image" src="http://www.zentralblatt-math.org/zbmath/images/box/right.gif" alt="" />
</div>
</form>
<div class="clear"></div>
<form class="form" action="http://www.zentralblatt-math.org/zbmath/de/" method="post">
<div id="main">
  <div id="content">      <h1>Willkommen bei der Zentralblatt MATH Datenbank</h1>
    <div class="clear"></div>
      <div class="text">
        <p class="start">Die Zentralblatt MATH Datenbank ZBMath wird von der Berliner Redaktion des FIZ Karlsruhe in Zusammenarbeit mit Europäischen Akademien und Mathematischen Instituten herausgegeben.</p><p>Die <a href="search/">einzeilige Suche</a> auf dieser Seite bietet den einfachsten Zugang zu unserer Datenbank. Alternativ dazu können Sie auch die einzelnen Suchfelder oben oder den Link auf die <a href="advanced/">erweiterte Suche</a> wählen, die ein noch detaillierteres Suchformular enthält. <br />Wenn in der einzeiligen Suche keine speziellen Suchfelder eingetragen werden, wird eine Suche über alle Felder durchgeführt. Sie können Ihre Suche  anschließend verfeinern, ohne die Trefferliste zu verlassen.</p><p>Ein neues Feature in ZBMath ist MathML. Damit ist es möglich, mathematische Symbole und Formeln in den Suchergebnissen direkt anzeigen zu lassen.</p>
  <div class="clear paragraph "></div>
</div>

    <div class="clear"></div>
      <div id="search">
      <div class="form">
  <div class="query">
    <label class="form" for="q">Suche:</label><br />
    <input class="text" type="text" id="q" name="q" value="" />
  </div>
  <div class="help">
    <a href="help/search/">Hilfe zur Suchformulierung</a>
  </div>
  <div class="reset">
    <a href="" onclick="$('input[name=\'q\']')[0].value='';return false;">Anfrage löschen</a>
  </div>
  <div class="go">
    <label class="form">&nbsp;</label><br />
    <input class="submit" type="submit" name="go" value="  Ok  " onclick="$('input[name=\'mark_:list:int\']').val('0');" />
  </div>
  <img class="top" src="http://www.zentralblatt-math.org/zbmath/images/box/top.gif" alt="" />
  <img class="left" src="http://www.zentralblatt-math.org/zbmath/images/box/left.gif" alt="" />
  <img class="right" src="http://www.zentralblatt-math.org/zbmath/images/box/right.gif" alt="" />
  <div class="clear"></div>
</div>

  </div>
    





    <div class="clear"></div>
      <div>
  
</div>

    <div class="clear"></div>
</div>
  <div id="menu"><ul><li><a href="http://www.zentralblatt-math.org/zbmath/" class="menu0 mark active"><img id="menu000" src="http://www.zentralblatt-math.org/zbmath/images/menu_a.gif" alt="" />Startseite</a></li><li><a href="http://www.zentralblatt-math.org/zbmath/search/" class="menu1" onmouseover="$('#menu101').attr('src','http://www.zentralblatt-math.org/zbmath/images/menu_a.gif');" onmouseout="$('#menu101').attr('src','http://www.zentralblatt-math.org/zbmath/images/menu.gif');"><img id="menu101" src="http://www.zentralblatt-math.org/zbmath/images/menu.gif" alt="" />Einfache Suche</a></li><li><a href="http://www.zentralblatt-math.org/zbmath/advanced/" class="menu1" onmouseover="$('#menu102').attr('src','http://www.zentralblatt-math.org/zbmath/images/menu_a.gif');" onmouseout="$('#menu102').attr('src','http://www.zentralblatt-math.org/zbmath/images/menu.gif');"><img id="menu102" src="http://www.zentralblatt-math.org/zbmath/images/menu.gif" alt="" />Erweiterte Suche</a></li><li><a href="http://www.zentralblatt-math.org/zbmath/classification/" class="menu1" onmouseover="$('#menu103').attr('src','http://www.zentralblatt-math.org/zbmath/images/menu_a.gif');" onmouseout="$('#menu103').attr('src','http://www.zentralblatt-math.org/zbmath/images/menu.gif');"><img id="menu103" src="http://www.zentralblatt-math.org/zbmath/images/menu.gif" alt="" />Klassifikation</a></li><li><a href="http://www.zentralblatt-math.org/zbmath/authors/" class="menu1" onmouseover="$('#menu104').attr('src','http://www.zentralblatt-math.org/zbmath/images/menu_a.gif');" onmouseout="$('#menu104').attr('src','http://www.zentralblatt-math.org/zbmath/images/menu.gif');"><img id="menu104" src="http://www.zentralblatt-math.org/zbmath/images/menu.gif" alt="" />Autoren</a></li><li><a href="http://www.zentralblatt-math.org/zbmath/journals/" class="menu1" onmouseover="$('#menu105').attr('src','http://www.zentralblatt-math.org/zbmath/images/menu_a.gif');" onmouseout="$('#menu105').attr('src','http://www.zentralblatt-math.org/zbmath/images/menu.gif');"><img id="menu105" src="http://www.zentralblatt-math.org/zbmath/images/menu.gif" alt="" />Serien und Zeitschriften</a></li><li><a href="http://www.zentralblatt-math.org/zbmath/help/" class="menu1" onmouseover="$('#menu106').attr('src','http://www.zentralblatt-math.org/zbmath/images/menu_a.gif');" onmouseout="$('#menu106').attr('src','http://www.zentralblatt-math.org/zbmath/images/menu.gif');"><img id="menu106" src="http://www.zentralblatt-math.org/zbmath/images/menu.gif" alt="" />Hilfe</a></li><li><a href="http://www.zentralblatt-math.org/zbmath/subscription/" class="menu1" onmouseover="$('#menu107').attr('src','http://www.zentralblatt-math.org/zbmath/images/menu_a.gif');" onmouseout="$('#menu107').attr('src','http://www.zentralblatt-math.org/zbmath/images/menu.gif');"><img id="menu107" src="http://www.zentralblatt-math.org/zbmath/images/menu.gif" alt="" />Abonnement</a></li><li><a href="http://www.zentralblatt-math.org/zbmath/contact/" class="menu1" onmouseover="$('#menu108').attr('src','http://www.zentralblatt-math.org/zbmath/images/menu_a.gif');" onmouseout="$('#menu108').attr('src','http://www.zentralblatt-math.org/zbmath/images/menu.gif');"><img id="menu108" src="http://www.zentralblatt-math.org/zbmath/images/menu.gif" alt="" />Kontakt</a></li><li><a href="http://www.zentralblatt-math.org/zbmath/about/" class="menu1" onmouseover="$('#menu109').attr('src','http://www.zentralblatt-math.org/zbmath/images/menu_a.gif');" onmouseout="$('#menu109').attr('src','http://www.zentralblatt-math.org/zbmath/images/menu.gif');"><img id="menu109" src="http://www.zentralblatt-math.org/zbmath/images/menu.gif" alt="" />Über Zentralblatt</a></li><li><a href="http://www.zentralblatt-math.org/zbmath/copyright/" class="menu1" onmouseover="$('#menu110').attr('src','http://www.zentralblatt-math.org/zbmath/images/menu_a.gif');" onmouseout="$('#menu110').attr('src','http://www.zentralblatt-math.org/zbmath/images/menu.gif');"><img id="menu110" src="http://www.zentralblatt-math.org/zbmath/images/menu.gif" alt="" />Copyright</a></li><li><a href="http://www.zentralblatt-math.org/zbmath/imprint/" class="menu1" onmouseover="$('#menu111').attr('src','http://www.zentralblatt-math.org/zbmath/images/menu_a.gif');" onmouseout="$('#menu111').attr('src','http://www.zentralblatt-math.org/zbmath/images/menu.gif');"><img id="menu111" src="http://www.zentralblatt-math.org/zbmath/images/menu.gif" alt="" />Impressum</a></li><li><a href="http://www.zentralblatt-math.org/zbmath/sitemap/" class="menu1" onmouseover="$('#menu112').attr('src','http://www.zentralblatt-math.org/zbmath/images/menu_a.gif');" onmouseout="$('#menu112').attr('src','http://www.zentralblatt-math.org/zbmath/images/menu.gif');"><img id="menu112" src="http://www.zentralblatt-math.org/zbmath/images/menu.gif" alt="" />Seitenübersicht</a></li></ul></div>
  <div id="editor"><div class="small">Copyright &copy; 2013:</div>
<a class="editor" href="http://www.fiz-karlsruhe.de" title=""><img src="http://www.zentralblatt-math.org/zbmath/images/logo/fiz.gif" alt="" /></a>
<a class="editor" href="http://www.euro-math-soc.eu" title=""><img src="http://www.zentralblatt-math.org/zbmath/images/logo/ems.gif" alt="" /></a>
<a class="editor" href="http://www.haw.baden-wuerttemberg.de" title=""><img src="http://www.zentralblatt-math.org/zbmath/images/logo/haw.gif" alt="" /></a>
<br />
<div class="small">Herausgeber:</div>
<a class="editor" href="http://www.springer.de" title=""><img src="http://www.zentralblatt-math.org/zbmath/images/logo/springer.gif" alt="" /></a>
</div>
  <div id="margin">      <div>
<a href="http://www.zentralblatt-math.org/zbmath/en/"><img class="flag" src="http://www.zentralblatt-math.org/zbmath/images/flag/en.gif" alt="English" title="English" /></a>
<a href="http://www.zentralblatt-math.org/zbmath/fr/"><img class="flag" src="http://www.zentralblatt-math.org/zbmath/images/flag/fr.gif" alt="Français" title="Français" /></a>
<a href="http://www.zentralblatt-math.org/zbmath/de/"><img class="flag" src="http://www.zentralblatt-math.org/zbmath/images/flag/de.gif" alt="Deutsch" title="Deutsch" /></a>
<a href="http://www.zentralblatt-math.org/zbmath/es/"><img class="flag" src="http://www.zentralblatt-math.org/zbmath/images/flag/es.gif" alt="Español" title="Español" /></a>
<a href="http://www.zentralblatt-math.org/zbmath/ru/"><img class="flag" src="http://www.zentralblatt-math.org/zbmath/images/flag/ru.gif" alt="Русский" title="Русский" /></a>
<a href="http://www.zentralblatt-math.org/zbmath/zh/"><img class="flag" src="http://www.zentralblatt-math.org/zbmath/images/flag/zh.gif" alt="中文" title="中文" /></a>
<a href="http://www.zentralblatt-math.org/zbmath/ja/"><img class="flag" src="http://www.zentralblatt-math.org/zbmath/images/flag/ja.gif" alt="日本語" title="日本語" /></a>
</div>
<div class="clear space"></div>

    <div class="clear"></div>
      <div id="logon">
  <div class="title">
    <img class="title" src="http://www.zentralblatt-math.org/zbmath/images/box/red.gif" alt="" />
    Anmeldung
  </div>
  <div class="content">
    <div class="username">
      <label class="form" for="username">Benutzername</label><br />
      <input class="text" type="text" id="username" name="logon_.username:record" value="" />
    </div>
    <div class="password">
      <label class="form" for="password">Passwort</label><br />
      <input class="text" type="password" id="password" name="logon_.password:record" value="" />
    </div>
    <div class="clear"></div>
    <div class="submit">
      <input class="submit" type="submit" name="logon_.login:record" value="  Anmelden  " />
    </div>
    <div class="link">
      <a href="mailto:editor@zentralblatt-math.org">Passwort vergessen</a> 
    </div>
    <img class="left" src="http://www.zentralblatt-math.org/zbmath/images/box/left.gif" alt="" />
    <img class="right" src="http://www.zentralblatt-math.org/zbmath/images/box/right.gif" alt="" />
    <div class="clear"></div>
  </div>
</div>

    <div class="clear"></div>
      <div id="terms">
  <div class="title">
    Nutzungsbedingungen
    <img class="title" src="http://www.zentralblatt-math.org/zbmath/images/box/blue.gif" alt="" />
  </div>
  <div class="content">
              <p class="start">Die Nutzung von ZBMATH unterliegt den Allgemeinen Nutzungs-, Liefer- und Zahlungsbedingungen für WEB Datenbanken von <a href="http://www.fiz-karlsruhe.de/">FIZ Karlsruhe</a>.</p><p>Link: <a href="http://www.fiz-karlsruhe.de/fileadmin/be_user/pdf/AGB/webdb_en.pdf">webdb_en.pdf</a></p><div class="clear paragraph "></div>
            <img class="left" src="http://www.zentralblatt-math.org/zbmath/images/box/left.gif" alt="" />
    <img class="right" src="http://www.zentralblatt-math.org/zbmath/images/box/right.gif" alt="" />
    <div class="clear"></div>
  </div>
</div>

    <div class="clear"></div>
</div>
</div>
</form>
<div class="clear"></div>
<div id="bottom">
  <div id="copyright">&copy; 2013 FIZ Karlsruhe GmbH</div>
  <div id="meta"><a href="http://www.zentralblatt-math.org/zbmath/contact/">Kontakt</a>
|
<a href="http://www.zentralblatt-math.org/zbmath/copyright/">Copyright</a>
|
<a href="http://www.zentralblatt-math.org/zbmath/imprint/">Impressum</a>
|
<a href="http://www.zentralblatt-math.org/zbmath/sitemap/">Seitenübersicht</a>
|
<a href="mailto:webmaster@zentralblatt-math.org">Webmaster</a>
</div>
</div>
</div>

    
<div style="text-align:right;">
  <a href="http://validator.w3.org/check?uri=referer"><img style="border:0;width:88px;height:31px" src="xhtml_icon" alt="Valid XHTML 1.0 Transitional" /></a>
  <a href="http://jigsaw.w3.org/css-validator/validator?uri=http%3A%2F%2Fwww.zentralblatt-math.org/%2Fzbmath%2Flayout.css&amp;profile=css21&amp;usermedium=all&amp;warning=1"><img style="border:0;width:88px;height:31px" src="css_icon" alt="Valid CSS!" /></a>
</div>
</body>
</html>
