File:	Content/TheoryOfSets/union/union3.html
Author:	Design Science, Inc. (E. Cannon, E. Tabacman, R.Miner)
Description:	A union empty set eq A
Sample Rendering:

Your browser's rendering:

A φ A

Source Code:

    <math> 
      <apply> 
        <eq/> 
        <apply> 
          <union/> 
          <ci>A</ci> 
          <cn>&phi;</cn> 
        </apply> 
        <ci>A</ci> 
      </apply> 
    </math>
  

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