<?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-2173</article-id>
      <title-group>
        <article-title>On directed signed cordial labeling</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name>
            <surname>Cynthia</surname>
            <given-names>V. Jude Annie</given-names>
          </name>
          <aff>Department of Mathematics, Stella Maris College (Autonomous), Chennai, Tamil Nadu, 600086, India</aff>
        </contrib>
        <contrib contrib-type="author" corresp="yes">
          <name>
            <surname>Padmavathy</surname>
            <given-names>E.</given-names>
          </name>
          <aff>Department of Mathematics, Avadi, Vel Tech Rangarajan Dr. Sagunthala R&amp; D Institute of Science and Technology, Chennai, Tamil Nadu, 600062, India</aff>
        </contrib>
      </contrib-group>
      <volume>47</volume>
      <issue>4</issue>
      <fpage>1335</fpage>
      <lpage>1343</lpage>
      <pub-date date-type="pub">
        <day>04</day>
        <month>04</month>
        <year>2026</year>
      </pub-date>
      <abstract>
        <p>A measurable collection of dots and a collection of ordered pairings of different dots make up a directed graph, commonly known as a digraph 𝒟.  Each (u,v) pair  is denoted by uv where u is the arc’s beginning dot and v its terminal dot, is an arc. A digraph having V dots and A arcs is called D(V, A). For each vertex v ∈ V, the indegree d –(v) of v indicates how many arcs have v as their terminal dot and the out degree d+(v) of v indicates how many arcs have v indicates how many arcs have v as their starting dot.  In this article, we explored the presence of di-signed cordiality for certain families of digraphs and defined a new style of labeling known as directed signed cordial labeling (DSCL), also known as di-signed cordial labeling. </p>
      </abstract>
      <kwd-group>
        <kwd>Di-graph</kwd>
        <kwd>Di triangular snake</kwd>
        <kwd>Di helm</kwd>
        <kwd>Di closed helm</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>
