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<div><span class="kw">theorem </span><a NAME="T81"><span class="comment"><font color="firebrick">:: TREES_3:81</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">T1</font>, <font color="Olive" title="b2">T2</font> being   <a href="finset_1.html#V1" title="FINSET_1:attr.1">finite</a>  <a href="trees_1.html#NM1" title="TREES_1:NM.1">Tree</a> holds   <a href="trees_1.html#K6" title="TREES_1:func.6">height</a> <span class="p1">(<span class="default"><a href="trees_3.html#K13" title="TREES_3:func.13">tree</a> (<font color="Olive" title="b1">T1</font>,<font color="Olive" title="b2">T2</font>)</span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><a href="xxreal_0.html#K4" title="XXREAL_0:func.4">max</a> (<span class="p2">(<span class="default"><a href="trees_1.html#K6" title="TREES_1:func.6">height</a> <font color="Olive" title="b1">T1</font></span>)</span>,<span class="p2">(<span class="default"><a href="trees_1.html#K6" title="TREES_1:func.6">height</a> <font color="Olive" title="b2">T2</font></span>)</span>)</span>)</span> <a href="nat_1.html#K1" title="NAT_1:func.1">+</a> 1</div></div>
