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<b>let </b><font color="Maroon" title="c3">P</font> be    <a href="pcs_0.html#L2" title="PCS_0:struct.2">pcs-Str</a> ;<br/><b>let </b><font color="Maroon" title="c4">X</font> be    <a href="hidden.html#M1" title="HIDDEN:mode.1">set</a> ;<br/>



<b>assume </b><a NAME="E1:217"/>
<font color="Maroon" title="c4">X</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="pcs_0.html#K27" title="PCS_0:func.27">pcs-coherent-power</a> <font color="Maroon" title="c3">P</font>
 ;<br/>

<a NAME="E2:217"/><b>then </b>
 ex <font color="Olive" title="b1">Y</font> being  <a href="struct_0.html#NM2" title="STRUCT_0:NM.2">Subset</a> of <font color="Maroon" title="c3">P</font> st <br/>( <font color="Maroon" title="c4">X</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Olive" title="b1">Y</font> &amp; <font color="Olive" title="b1">Y</font> is <a href="pcs_0.html#V21" title="PCS_0:attr.21">pcs-self-coherent</a> )
 
;<br/>
<b>hence </b><a NAME="E3:217"/>
<font color="Maroon" title="c4">X</font> is  <a href="pcs_0.html#V21" title="PCS_0:attr.21">pcs-self-coherent</a> <a href="struct_0.html#NM2" title="STRUCT_0:NM.2">Subset</a> of <font color="Maroon" title="c3">P</font>
 ;<br/>


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