<?xml version="1.0" encoding="UTF-8"?>
<article article-type="Research Article">
  <front>
    <journal-meta>
      <journal-id journal-id-type="publisher">journal-of-information-and-optimization-sciences</journal-id>
      <journal-title-group>
        <journal-title>Journal of Information and Optimization Sciences</journal-title>
      </journal-title-group>
      <issn publication-format="electronic">2169-0103</issn>
      <issn publication-format="print">0252-2667</issn>
      <publisher>
        <publisher-name>Taru Publications</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id pub-id-type="doi">10.47974/JIOS-1352</article-id>
      <title-group>
        <article-title>Similar d– even vertex odd mean labeling of diverse graphs</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name>
            <surname>Deen</surname>
            <given-names>Mohamed R. Zeen El</given-names>
          </name>
          <aff>Department of Mathematics and Computer Science, Faculty of Science, Suez University, Suez, 42524, Egypt</aff>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Omar</surname>
            <given-names>Nora A.</given-names>
          </name>
          <aff>Department of Mathematics and Computer Science, Faculty of Science, Port-Said University, Egypt</aff>
        </contrib>
      </contrib-group>
      <volume>44</volume>
      <issue>7</issue>
      <fpage>1365</fpage>
      <lpage>1396</lpage>
      <pub-date date-type="pub">
        <day>19</day>
        <month>10</month>
        <year>2023</year>
      </pub-date>
      <abstract>
        <p>An injective function F  where, F : V(G) → {0,2,4, ..., 2b + 2d - 2}  is said to be d-even vertex odd mean labeling (d-EVOML) of the graph G(a, b)  when the induced mapping F* : E(G) → {1,3, ..., 2b - 1}  given by: F*(lw) = F(l)+F(w)/2, is a bijective function. A d - even vertex odd mean graph is a graph which allows even vertex odd mean labelling. In this study, we identify the lowest value of d for which the graphs: Y-tree, star graph, Px ʘ Kh,  crown graph Rh,  and rooted product Ph◊C4  have a d- even vertex odd mean labeling. Furthermore, we find the minimum number d for which the graphs: cycle graph Ch when h ≡ 2 mod 4,  dragon graph Px(Ch)  when h ≡ 2 mod 4, x ≥ 1,  prism graph Ph,  and Toeplitz graphs Th(1, 3), Th(1, 5)  and Th(1, 3, 5)  have a similar d- even vertex odd mean labeling. In the end, we establish that no odd cycle Ch  is an even vertex odd mean graph for all d.</p>
      </abstract>
      <kwd-group>
        <kwd>Similar d–even vertex odd mean labeling</kwd>
        <kwd>Rooted product operation</kwd>
        <kwd>Toeplitz graphs</kwd>
        <kwd>Prism graph</kwd>
      </kwd-group>
      <custom-meta-group>
        <custom-meta>
          <meta-name>access</meta-name>
          <meta-value>open</meta-value>
        </custom-meta>
        <custom-meta>
          <meta-name>retracted</meta-name>
          <meta-value>no</meta-value>
        </custom-meta>
      </custom-meta-group>
    </article-meta>
  </front>
</article>
