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<html>
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<head>
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<title>embellished operators 5: vertical stretchy operator</title>
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</head>
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<body>
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<div>
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<math xmlns="http://www.w3.org/1998/Math/MathML">
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<mrow>
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<msub>
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<mo>|</mo>
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<mspace/>
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</msub>
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<mspace height="30px" depth="30px"/>
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</mrow>
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</math>
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</div>
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</body>
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</html>
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