data/pom/135.xml
<?xml version="1.0" ?>
<math type="pom-exported">
<expression prime-tag="sequence">
<term prime-tag="letter" secondary-tags="Latin">S</term>
<expression prime-tag="balanced-expression">
<term prime-tag="left-delimiter">\left(</term>
<expression prime-tag="sequence">
<term prime-tag="letter" secondary-tags="Latin">n</term>
<term prime-tag="comma" secondary-tags="punctuation">,</term>
<term prime-tag="letter" secondary-tags="Latin">m</term>
</expression>
<term prime-tag="right-delimiter">\right)</term>
</expression>
<term prime-tag="equals">=</term>
<expression prime-tag="fraction">
<term prime-tag="digit" secondary-tags="numeric">1</term>
<expression prime-tag="sequence" secondary-tags="denominator">
<term prime-tag="letter" secondary-tags="Latin">m</term>
<term prime-tag="exclamation point" secondary-tags="punctuation">!</term>
</expression>
</expression>
<term prime-tag="operator">\sum</term>
<expression prime-tag="subsuperscript">
<expression prime-tag="underscore" secondary-tags="subscript_operation">
<expression prime-tag="sequence" secondary-tags="subscript">
<term prime-tag="letter" secondary-tags="Latin">k</term>
<term prime-tag="equals">=</term>
<term prime-tag="digit" secondary-tags="numeric">0</term>
</expression>
</expression>
<expression prime-tag="caret" secondary-tags="superscript_operation">
<expression prime-tag="sequence" secondary-tags="superscript">
<term prime-tag="letter" secondary-tags="Latin">n</term>
<term prime-tag="minus">-</term>
<term prime-tag="digit" secondary-tags="numeric">1</term>
</expression>
</expression>
</expression>
<term prime-tag="opening delimiter">\langle</term>
<expression prime-tag="fraction">
<term prime-tag="letter" secondary-tags="Latin">n</term>
<term prime-tag="letter" secondary-tags="Latin">k</term>
</expression>
<term prime-tag="closing delimiter">\rangle</term>
<expression prime-tag="fraction">
<term prime-tag="letter" secondary-tags="Latin">k</term>
<expression prime-tag="sequence" secondary-tags="denominator">
<term prime-tag="letter" secondary-tags="Latin">n</term>
<term prime-tag="minus">-</term>
<term prime-tag="letter" secondary-tags="Latin">m</term>
</expression>
</expression>
</expression>
</math>