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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E35">Th31</font></span>: <a NAME="T32"><span class="comment"><font color="firebrick">:: EUCLID_7:32</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">n</font> being   non  <a href="ordinal1.html#V8" title="ORDINAL1:attr.8">zero</a>  <a href="ordinal1.html#NM6" title="ORDINAL1:NM.6">Nat</a>  holds  <a href="euclid_7.html#K8" title="EUCLID_7:func.8">RN_Base</a> <font color="Olive" title="b1">n</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> </div></div>
