File:	Content/Relations/equivalent/rec-equivalent1.html
Author:	MathML 2 Recommendation
Description:	a is equivalent to not not a
Sample Rendering:

Your browser's rendering:

a a

Source Code:

    <math> 
      <apply> 
        <equivalent/> 
        <ci> a </ci> 
        <apply> 
          <not/> 
          <apply> 
            <not/> 
            <ci> a </ci> 
          </apply> 
        </apply> 
      </apply> 
    </math>
  

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