<math xmlns="http://www.w3.org/1998/Math/MathML" id="p1.1.m1.1" class="ltx_Math" alttext="{\displaystyle s\in S}" display="inline">
  <semantics id="p1.1.m1.1a">
    <mrow id="p1.1.m1.1.4" xref="p1.1.m1.1.4.cmml">
      <mi id="p1.1.m1.1.1" xref="p1.1.m1.1.1.cmml">s</mi>
      <mo id="p1.1.m1.1.2" xref="p1.1.m1.1.2.cmml">∈</mo>
      <mi id="p1.1.m1.1.3" xref="p1.1.m1.1.3.cmml">S</mi>
    </mrow>
    <annotation-xml encoding="MathML-Content" id="p1.1.m1.1b">
      <apply id="p1.1.m1.1.4.cmml" xref="p1.1.m1.1.4">
        <in id="p1.1.m1.1.2.cmml" xref="p1.1.m1.1.2"/>
        <ci id="p1.1.m1.1.1.cmml" xref="p1.1.m1.1.1">𝑠</ci>
        <ci id="p1.1.m1.1.3.cmml" xref="p1.1.m1.1.3">𝑆</ci>
      </apply>
    </annotation-xml>
    <annotation encoding="application/x-tex" id="p1.1.m1.1c">{\displaystyle s\in S}</annotation>
  </semantics>
</math>

<math xmlns="http://www.w3.org/1998/Math/MathML" display="block" alttext="{\displaystyle s\in S}">
  <semantics>
    <mrow class="MJX-TeXAtom-ORD">
      <mstyle displaystyle="true" scriptlevel="0">
        <mi>s</mi>
        <mo>&#x2208;<!-- ∈ --></mo>
        <mi>S</mi>
      </mstyle>
    </mrow>
    <annotation encoding="application/x-tex">{\displaystyle s\in S}</annotation>
  </semantics>
</math>