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<span class="kw">let </span><font color="Maroon" title="c1">N</font>, <font color="Maroon" title="c2">M</font> be   <a href="card_1.html#NM1" title="CARD_1:NM.1">Cardinal</a>; <a class="txt" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide">  <a href="card_3.html#K7" title="CARD_3:func.7">Product</a> <span class="p1">(<span class="default"><font color="Maroon" title="c1">N</font> <a href="funcop_1.html#K7" title="FUNCOP_1:func.7">--&gt;</a> <font color="Maroon" title="c2">M</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="card_2.html#K3" title="CARD_2:func.3">exp</a> (<font color="Maroon" title="c2">M</font>,<font color="Maroon" title="c1">N</font>)</span><br/>



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 <a href="card_2.html#K3" title="CARD_2:func.3">exp</a> (<font color="Maroon" title="c2">M</font>,<font color="Maroon" title="c1">N</font>) <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="card_1.html#K1" title="CARD_1:func.1">card</a> <span class="p1">(<span class="default"><a href="funct_2.html#K1" title="FUNCT_2:func.1">Funcs</a> (<font color="Maroon" title="c1">N</font>,<font color="Maroon" title="c2">M</font>)</span>)</span>
 
<span class="kw">by</span> <span class="lab"><a class="ref" href="card_3.html#D3" title="CARD_3:def.3">CARD_3:def 3</a></span>;<br/>
<span class="kw">hence </span><a NAME="E2:67"/>
 <a href="card_3.html#K7" title="CARD_3:func.7">Product</a> <span class="p1">(<span class="default"><font color="Maroon" title="c1">N</font> <a href="funcop_1.html#K7" title="FUNCOP_1:func.7">--&gt;</a> <font color="Maroon" title="c2">M</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="card_2.html#K3" title="CARD_2:func.3">exp</a> (<font color="Maroon" title="c2">M</font>,<font color="Maroon" title="c1">N</font>)
 <span class="kw">by</span> <span class="lab"><a class="ref" href="card_3.html#T11" title="CARD_3:th.11">CARD_3:11</a></span>; <a class="txt" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> verum</span><br/>


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