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<div><span class="kw">theorem </span><a NAME="T48"><span class="comment"><font color="firebrick">:: MONOID_0:48</font></span><br/></a><div class="add">(  <a href="numbers.html#K5" title="NUMBERS:func.5">0</a>  <a href="binop_1.html#R3" title="BINOP_1:pred.3">is_a_unity_wrt</a>  <a href="binop_2.html#K23" title="BINOP_2:func.23">addnat</a>  &amp;  <a href="binop_2.html#K23" title="BINOP_2:func.23">addnat</a>  is  <a href="monoid_0.html#V9" title="MONOID_0:attr.9">uniquely-decomposable</a>  )</div></div>
