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<a NAME="E1:37_1_1"/>
 <a href="trees_2.html#K10" title="TREES_2:func.10">branchdeg</a> <font color="Maroon" title="c2">v</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="card_1.html#K4" title="CARD_1:func.4">card</a> <span class="p1">(<span class="default"><a href="trees_2.html#K1" title="TREES_2:func.1">succ</a> <font color="Maroon" title="c2">v</font></span>)</span>
 
<b>by </b><i><a class="ref" href="trees_2.html#D13" title="TREES_2:def.13">TREES_2:def 13</a></i>;<br/>
<b>hence </b><a NAME="E2:37_1_1"/>
 <a href="trees_2.html#K10" title="TREES_2:func.10">branchdeg</a> <font color="Maroon" title="c2">v</font> is    <a href="subset_1.html#M1" title="SUBSET_1:mode.1">Element</a> of  <a href="numbers.html#K5" title="NUMBERS:func.5">NAT</a> 
 ;<br/>


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