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<a NAME="E1:51_2_1"/>
 ex <font color="Olive" title="b1">m1</font>, <font color="Olive" title="b2">m2</font> being   <a href="pnproc_1.html#M1" title="PNPROC_1:mode.1">marking</a> of <font color="Maroon" title="c1">P</font> st <font color="Maroon" title="c2">t</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="tarski.html#K4" title="TARSKI:func.4">[</a><span class="default"><font color="Olive" title="b1">m1</font>,<font color="Olive" title="b2">m2</font></span><a href="tarski.html#K4" title="TARSKI:func.4">]</a></span>
 
<b>by </b><i><a class="ref" href="pnproc_1.html#D7" target="_self" title="PNPROC_1:def.7">Def7</a></i>;<br/>
<b>hence </b><a NAME="E2:51_2_1"/>
<font color="Maroon" title="c2">t</font> <a href="mcart_1.html#K2" title="MCART_1:func.2">`2</a>  is    <a href="pnproc_1.html#M1" title="PNPROC_1:mode.1">marking</a> of <font color="Maroon" title="c1">P</font>
 <b>by </b><i><a class="ref" href="mcart_1.html#T7" title="MCART_1:th.7">MCART_1:7</a></i>;<br/>


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