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<div><span class="kw">theorem </span><a NAME="T81"><span class="comment"><font color="firebrick">:: ARYTM_3:81</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">r1</font>, <font color="Olive" title="b2">r2</font>, <font color="Olive" title="b3">s1</font>, <font color="Olive" title="b4">s2</font> being    <a href="subset_1.html#M1" title="SUBSET_1:mode.1">Element</a> of  <a href="arytm_3.html#K5" title="ARYTM_3:func.5">RAT+</a>   holds <br/>(  not <font color="Olive" title="b1">r1</font> <a href="arytm_3.html#K9" title="ARYTM_3:func.9">+</a> <font color="Olive" title="b2">r2</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Olive" title="b3">s1</font> <a href="arytm_3.html#K9" title="ARYTM_3:func.9">+</a> <font color="Olive" title="b4">s2</font> or <font color="Olive" title="b1">r1</font> <a href="arytm_3.html#R3" title="ARYTM_3:pred.3">&lt;='</a> <font color="Olive" title="b3">s1</font> or <font color="Olive" title="b2">r2</font> <a href="arytm_3.html#R3" title="ARYTM_3:pred.3">&lt;='</a> <font color="Olive" title="b4">s2</font> )</div></div>
