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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E1">th0a</font></span>: <a NAME="T2"><span class="comment"><font color="firebrick">:: FIELD_5:2</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">n</font>, <font color="Olive" title="b2">m</font> being   <a href="ordinal1.html#NM6" title="ORDINAL1:NM.6">Nat</a> holds <br/> ( <font color="Olive" title="b1">n</font> <a href="card_2.html#K1" title="CARD_2:func.1">+`</a> <font color="Olive" title="b2">m</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Olive" title="b1">n</font> <a href="xcmplx_0.html#K2" title="XCMPLX_0:func.2">+</a> <font color="Olive" title="b2">m</font> &amp; <font color="Olive" title="b1">n</font> <a href="card_2.html#K2" title="CARD_2:func.2">*`</a> <font color="Olive" title="b2">m</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Olive" title="b1">n</font> <a href="xcmplx_0.html#K3" title="XCMPLX_0:func.3">*</a> <font color="Olive" title="b2">m</font> )</div></div>
