<?xml version="1.0" encoding="UTF-8"?>
<article article-type="Research Article">
  <front>
    <journal-meta>
      <journal-id journal-id-type="publisher">journal-of-interdisciplinary-mathematics</journal-id>
      <journal-title-group>
        <journal-title>Journal of Interdisciplinary Mathematics</journal-title>
      </journal-title-group>
      <issn publication-format="electronic">2169-012X</issn>
      <issn publication-format="print">0972-0502</issn>
      <publisher>
        <publisher-name>Taru Publications</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id pub-id-type="doi">10.47974/JIM-2526</article-id>
      <title-group>
        <article-title>Investigations into quasi-hyponormal operators through the lens of Drazin inverse theory within the framework of fuzzy soft set theory </article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name>
            <surname>Mohsen</surname>
            <given-names>Salim Dawood</given-names>
          </name>
          <aff>Department of Mathematics, College of Education, Mustansiriyah University, Baghdad, 10052, Iraq</aff>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Hamza</surname>
            <given-names>Zaid Rajih</given-names>
          </name>
          <aff>Department of Mathematics, College of Education, Mustansiriyah University, Baghdad, 10052, Iraq</aff>
        </contrib>
      </contrib-group>
      <volume>29</volume>
      <issue>5-B</issue>
      <fpage>1441</fpage>
      <lpage>1449</lpage>
      <pub-date date-type="pub">
        <day>27</day>
        <month>06</month>
        <year>2026</year>
      </pub-date>
      <abstract>
        <p>This research aims to provide a generalization of an advanced class in the fields of fuzzy soft theory and operator theory, which is highlights a new class of fuzzy soft quasi-hyponormal operator via a technique of fuzzy soft Drazin inverse named fuzzy soft Drazin inverse quasi-hyponormal operator (FSQDI-Hyponormal) operator, in fuzzy soft Hilbert space. Moreover, some analytical traits are revealed for this imposed operator. In addition, the direct sum and tensor product are discussed.</p>
      </abstract>
      <kwd-group>
        <kwd>Hilbert space</kwd>
        <kwd>Soft set</kwd>
        <kwd>Fuzzy soft set</kwd>
        <kwd>Fuzzy soft Hilbert space</kwd>
        <kwd>Fuzzy soft drazin invertible</kwd>
        <kwd>Quasi-hyponormal operator</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>
