ag-gipp/GoUldI

<?xml version="1.0" ?>
<math type="pom-exported">
  <expression prime-tag="sequence">
    <term prime-tag="alphanumeric">df</term>
    <term prime-tag="equals">=</term>
    <expression prime-tag="sequence">
      <term prime-tag="operator">\partial</term>
      <term prime-tag="letter" secondary-tags="Latin">f</term>
      <term prime-tag="latex-command">\over</term>
      <term prime-tag="operator">\partial</term>
      <term prime-tag="letter" secondary-tags="Latin">x</term>
    </expression>
    <term prime-tag="alphanumeric">dx</term>
    <term prime-tag="plus">+</term>
    <expression prime-tag="sequence">
      <term prime-tag="operator">\partial</term>
      <term prime-tag="letter" secondary-tags="Latin">f</term>
      <term prime-tag="latex-command">\over</term>
      <term prime-tag="operator">\partial</term>
      <term prime-tag="letter" secondary-tags="Latin">y</term>
    </expression>
    <term prime-tag="alphanumeric">dy</term>
    <term prime-tag="equals">=</term>
    <term prime-tag="letter" secondary-tags="Latin">p</term>
    <term prime-tag="alphanumeric">dx</term>
    <term prime-tag="plus">+</term>
    <term prime-tag="letter" secondary-tags="Latin">v</term>
    <term prime-tag="alphanumeric">dy</term>
  </expression>
</math>