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<div><span class="kw">theorem </span><a NAME="T41"><span class="comment"><font color="firebrick">:: TREES_3:41</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">T</font> being   <a href="trees_1.html#NM1" title="TREES_1:NM.1">Tree</a> holds  <font color="Olive" title="b1">T</font> is   <a href="trees_3.html#NM7" title="TREES_3:NM.7">T-Substitution</a> of <a href="numbers.html#K5" title="NUMBERS:func.5">0</a></div></div>
