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<front>
<journal-meta>
<journal-id journal-id-type="publisher">global-journal-of-science-frontier-research-f-mathematics-decision</journal-id>
<journal-title-group>
<journal-title>Global Journal of Science Frontier Research - F: Mathematics &amp; Decision</journal-title>
</journal-title-group>
<issn publication-format="print">0975-5896</issn>
<issn publication-format="electronic">2249-4626</issn>
<publisher><publisher-name>Global Journals Publishing Group Incorporated</publisher-name></publisher>
<self-uri xlink:href="https://globaljournals.org/journal-seo-export/jats/58323.xml" />
</journal-meta>
<article-meta>
<article-id pub-id-type="publisher-id">58323</article-id>
<title-group>
<article-title>A 4-Color Circular Map Coloring Method</article-title>
<subtitle>Circular Map Coloring Method and Four Color Theorem</subtitle>
</title-group>
<contrib-group>
<contrib contrib-type="author"><name><surname>Han</surname><given-names>Shijun</given-names></name><xref ref-type="aff" rid="aff1" />
</contrib>
</contrib-group>
<aff id="aff1">CHINA</aff>
<pub-date publication-format="electronic" date-type="pub" iso-8601-date="2023-09-12">
<day>12</day>
<month>09</month>
<year>2023</year>
</pub-date>
<volume>23</volume>
<issue>F5</issue>
<fpage>1</fpage>
<lpage>6</lpage>
<abstract><p>Different vertices are colored in a plan. Adjacent vertices are colored differently from nonadjacent vertices, which are colored the same color. One color is used for a single point, two color are used for points without a loop, and a maximum of four color are used for points with a loop. A maximum of four color are used to color all points.</p></abstract>
<kwd-group kwd-group-type="author-generated">
<kwd>map</kwd>
<kwd>four color</kwd>
<kwd>four color conjecture</kwd>
<kwd>graph theory.</kwd>
</kwd-group>
<self-uri content-type="pdf" xlink:href="https://globaljournals.org/GJSFR_Volume23/1-A-4-Color-Circular-Map.pdf" />
<self-uri content-type="html" xlink:href="https://globaljournals.org/scholarly-articles/a-4-color-circular-map-coloring-method/" />
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<title>Full Text</title>
<p>Different vertices are colored in a plan. Adjacent vertices are colored differently from nonadjacent vertices, which are colored the same color. One color is used for a single point, two color are used for points without a loop, and a maximum of four color are used for points with a loop. A maximum of four color are used to color all points.</p>
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</body>
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