<?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-1900</article-id>
      <title-group>
        <article-title>Pseudospectra and condition pseudospectra of multivalued linear operators on non-Archimedean Banach spaces</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name>
            <surname>Ettayb</surname>
            <given-names>J.</given-names>
          </name>
          <aff>Hamman Al-Fatawaki Collegiate High School, Provincial Directorate of National Education of Berrechid, Regional Academy of Education and Training Casablanca-Settat, Had Soualem, Morocco</aff>
        </contrib>
      </contrib-group>
      <volume>28</volume>
      <issue>7</issue>
      <fpage>2439</fpage>
      <lpage>2457</lpage>
      <pub-date date-type="pub">
        <day>19</day>
        <month>08</month>
        <year>2025</year>
      </pub-date>
      <abstract>
        <p>In the present paper, we extend the concepts of pseudo-spectra and condition pseudo-spectra of any closed relations in non-Archimedean Banach spaces. Moreover, many results are proved about them.</p>
      </abstract>
      <kwd-group>
        <kwd>Linear relations</kwd>
        <kwd>Non-Archimedean Banach spaces</kwd>
        <kwd>Essential pseudospectra</kwd>
        <kwd>Pseudospectra</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>
