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    <tags>
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      <tag role="refnum">1</tag>
      <tag role="typerefnum">§1</tag>
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    <title><tag close=" ">1</tag>Evaluate At</title>
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        <tag role="typerefnum">§1.1</tag>
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      <title><tag close=" ">1.1</tag>Conditional (probability)</title>
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      <tag>2</tag>
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    <title><tag close=" ">2</tag>Absolute values</title>
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  </section>
  <section inlist="toc" xml:id="S3">
    <tags>
      <tag>3</tag>
      <tag role="refnum">3</tag>
      <tag role="typerefnum">§3</tag>
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    <title><tag close=" ">3</tag>Failures w/o Backtracking</title>
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  </section>
  <section inlist="toc" xml:id="S4">
    <tags>
      <tag>4</tag>
      <tag role="refnum">4</tag>
      <tag role="typerefnum">§4</tag>
    </tags>
    <title><tag close=" ">4</tag>Quantum Mechanics &amp; Sets</title>
    <para xml:id="S4.p1">
      <p>See qm.tex and sets.tex</p>
    </para>
  </section>
</document>