<?xml version='1.0' ?>
<m:oMathPara>
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    <m:jc m:val="center" />
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  <m:oMath>
    <m:nary>
      <m:naryPr>
        <m:chr m:val="⋂" />
        <m:limLoc m:val="undOvr" />
        <m:supHide m:val="off" />
        <m:supHide m:val="off" />
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      <m:e>
        <m:r>
          <m:rPr />
          <m:t>A</m:t>
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        <m:r>
          <m:rPr />
          <m:t>∩</m:t>
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        <m:r>
          <m:rPr />
          <m:t>B</m:t>
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          <m:t>i</m:t>
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          <m:t>=</m:t>
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        <m:r>
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          <m:t>0</m:t>
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      <m:sup>
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          <m:rPr />
          <m:t>∞</m:t>
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