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File:	Content/TheoryOfSets/notprsubset/notprsubset2
CVS-ID:
Author:	Design Science, Inc. (E. Cannon, E. Tabacman, R.Miner)
Description:	A is not a proper subset of B as <reln>
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Source Code:

    <math xmlns="http://www.w3.org/1998/Math/MathML">
      <reln>
        <notprsubset/>
        <ci> A </ci>
        <ci> B </ci>
      </reln>
    </math>