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<a NAME="E1:145_2_1"/><i><font color="Green" title="E95">A2</font></i>: 
( 1 <a href="xxreal_0.html#R1" title="XXREAL_0:pred.1">&lt;=</a> 2 &amp; 2 <a href="xxreal_0.html#R1" title="XXREAL_0:pred.1">&lt;=</a> 1 <a href="nat_1.html#K1" title="NAT_1:func.1">+</a> 1 &amp;  <a href="unialg_1.html#K3" title="UNIALG_1:func.3">arity</a> <font color="Maroon" title="c1">f</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> 1 &amp;  <a href="unialg_1.html#K3" title="UNIALG_1:func.3">arity</a> <font color="Maroon" title="c2">g</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> 1 <a href="nat_1.html#K1" title="NAT_1:func.1">+</a> 2 &amp; <font color="Maroon" title="c1">f</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="comput_1.html#K10" title="COMPUT_1:func.10">PrimRec</a>  &amp; <font color="Maroon" title="c2">g</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="comput_1.html#K10" title="COMPUT_1:func.10">PrimRec</a>  )
 
<b>by </b><i><a class="ref" href="comput_1.html#D19" target="_self" title="COMPUT_1:def.19">Def19</a>, <a class="ref" href="comput_1.html#D25" target="_self" title="COMPUT_1:def.25">Def25</a>, <a class="ref" href="comput_1.html#D27" target="_self" title="COMPUT_1:def.27">Def27</a></i>;<br/>
<b>hence </b><a NAME="E2:145_2_1"/>
 <a href="comput_1.html#K9" title="COMPUT_1:func.9">primrec</a> <font color="Maroon" title="c1">f</font>,<font color="Maroon" title="c2">g</font>,2 <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="comput_1.html#K10" title="COMPUT_1:func.10">PrimRec</a> 
 <b>by </b><i><a class="ref" href="comput_1.html#T77" target="_self" title="COMPUT_1:th.77">Th77</a></i>; <i><font color="Red">:: according to </font></i><a class="ref" href="comput_1.html#D19" target="_self" title="COMPUT_1:def.19">COMPUT_1:def 19</a><br/>

<b>thus </b><a NAME="E3:145_2_1"/>
 <a href="unialg_1.html#K3" title="UNIALG_1:func.3">arity</a> <span class="p1">(<span class="default"><a href="comput_1.html#K9" title="COMPUT_1:func.9">primrec</a> <font color="Maroon" title="c1">f</font>,<font color="Maroon" title="c2">g</font>,2</span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> 2
 <b>by </b><i><a class="txt" href="comput_1.html#E1:145_2_1"><i><font color="Green" title="E95">A2</font></i></a>, <a class="ref" href="comput_1.html#T61" target="_self" title="COMPUT_1:th.61">Th61</a></i>; <i><font color="Red">:: according to </font></i><a class="ref" href="comput_1.html#D26" target="_self" title="COMPUT_1:def.26">COMPUT_1:def 26</a><br/>


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