<?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-1799</article-id>
      <title-group>
        <article-title>Degree of approximation by Fourier series in terms of the generalized modulus of smoothness</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name>
            <surname>Awaad</surname>
            <given-names>Bushra Kadhum</given-names>
          </name>
          <aff>Department of Mathematics, College of Education for Pure Sciences, University of Babylon, Babylon, 51002, Iraq</aff>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Bhaya</surname>
            <given-names>Eman Samer</given-names>
          </name>
          <aff>Department of Mathematics, College of Education for Pure Sciences, University of Babylon, Babylon, 51002, Iraq</aff>
        </contrib>
      </contrib-group>
      <volume>28</volume>
      <issue>1</issue>
      <fpage>89</fpage>
      <lpage>93</lpage>
      <pub-date date-type="pub">
        <day>13</day>
        <month>02</month>
        <year>2025</year>
      </pub-date>
      <abstract>
        <p>Many papers introduced for the approximation of continuous functions on a closed intervals using algebraic polynomials. Here we shall introduce a sequence of trigonometric operators on the Lebesgue quasi normed spaces, Then we using it to approximate functions in Lebesgue quasi normed spaces, in terms of modulus of smoothness of degree k. </p>
      </abstract>
      <kwd-group>
        <kwd>Approximation</kwd>
        <kwd>Lp-quasi norm</kwd>
        <kwd>Lipchitz spaces</kwd>
        <kwd>Trigonometrical polynomials</kwd>
        <kwd>Trigonometric approximation</kwd>
        <kwd>Modulus of smoothness</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>
