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  <div id="content">      <h1>Search in Zentralblatt MATH Database</h1>
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    <h2>Display fields</h2>    <p class="start">The DISPLAY fields which you may see in records of ZBMATH Database are summarized below.<br />&nbsp;</p><ul><li><strong>au</strong> authors, editors</li><li><strong>ti</strong> title</li><li><strong>la</strong> language</li><li><strong>so</strong> source</li><li><strong>py</strong> publication year</li><li><strong>dt</strong> document type</li><li><strong>cc</strong> classification code</li><li><strong>ut</strong> english keywords</li><li><strong>br</strong> biographical references</li><li><strong>ab</strong> review / abstracts</li><li><strong>rv</strong> reviewer</li><li><strong>ci</strong> citations</li></ul><p></p>
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    <h2>Search fields</h2>    <p class="start">The searchable fields of the database MATH which are displayed in the search menu are listed below.<br />&nbsp;</p><ul><li><strong>bi</strong> basic index (including au ti,, ut, cc (text), ci, ab, br)</li><li><strong>au</strong> author(s), editors, author references</li><li><strong>ai</strong> identified author(s); will also be executed when clicking at the name of an identified author</li><li><strong>ti</strong> title</li><li><strong>so</strong> source</li><li><strong>py</strong> publication year</li><li><strong>cc</strong> classification code</li><li><strong>rv</strong> reviewer</li><li><strong>dt</strong> document type</li><li><strong>an</strong> accession number</li></ul><p></p>
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    <h2>Proximity</h2>    <p class="start">A simple form of proximity searching is available for this database, in the following text fields: <strong>ti</strong>, <strong>so</strong>. A group of consecutive words may be searched for by selecting &quot;expression&quot;.</p>
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    <h2>Truncation</h2>    <p class="start">The (right) truncation symbol <strong>*</strong> is used to retrieve various forms of your search terms. In the author search the truncation is used automatically.<br />Left truncation is not available.</p>
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    <h2>TeX</h2>    <p class="start">The description of mathematical contents within the records of MATH database requires the use of a formatting language which is capable of presenting special characters, formulae and formatting instructions. The most widely used and best known language for these purposes is TeX. Therefore TeX is used in the encoding of the data for MATH. However, a TeX-implementation on your computer is not a necessary condition for MATH Database to run.<br />But if high output quality is asked for, if it is desired to get output in a form similar to the printed version of Zentralblatt für Mathematik, then viewers for DVI, PostScript or PDF should be available on your system.</p>
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