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<div><span class="kw">theorem </span><a NAME="T12"><span class="comment"><font color="firebrick">:: PNPROC_1:12</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">P</font> being    <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a> <br/>  for <font color="Olive" title="b2">m1</font>, <font color="Olive" title="b3">m2</font>, <font color="Olive" title="b4">m3</font>, <font color="Olive" title="b5">m4</font> being   <a href="pnproc_1.html#NM1" title="PNPROC_1:NM.1">marking</a> of <font color="Olive" title="b1">P</font>  st <font color="Olive" title="b2">m1</font> <a href="pnproc_1.html#R2" title="PNPROC_1:pred.2">c=</a> <font color="Olive" title="b3">m2</font> &amp; <font color="Olive" title="b4">m3</font> <a href="pnproc_1.html#R2" title="PNPROC_1:pred.2">c=</a> <font color="Olive" title="b5">m4</font> holds <br/><font color="Olive" title="b2">m1</font> <a href="pnproc_1.html#K2" title="PNPROC_1:func.2">+</a> <font color="Olive" title="b4">m3</font> <a href="pnproc_1.html#R2" title="PNPROC_1:pred.2">c=</a> <font color="Olive" title="b3">m2</font> <a href="pnproc_1.html#K2" title="PNPROC_1:func.2">+</a> <font color="Olive" title="b5">m4</font></div></div>
