File:	Content/TheoryOfSets/prsubset/rec-prsubset1.html
Author:	MathML 2 Recommendation
Description:	A is proper subset of B as <apply>
Sample Rendering:

Your browser's rendering:

A B

Source Code:

    <math> 
      <apply> 
        <prsubset/> 
        <ci> A </ci> 
        <ci> B </ci> 
      </apply> 
    </math>
  

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