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<div class="add">

<b>let </b><font color="Maroon">T</font> be    <a href="struct_0.html#L1">1-sorted</a> ;<br/>

<div><b>hereby </b>
<div class="add"><b>assume </b><a NAME="E1:2_1"/>
<font color="Maroon">T</font> is <a href="orders_4.html#V1">countable</a>
 ;<br/><a NAME="E2:2_1"/><b>then </b>
 <a href="pre_topc.html#K2">[#]</a> <font color="Maroon">T</font> is <a href="card_4.html#V1">countable</a>
 <b>by </b><i/>;<br/><b>hence </b><a NAME="E3:2_1"/>
 <a href="card_1.html#K1">Card</a> <span class="p1">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <font color="Maroon">T</font></span>)</span> <a href="card_1.html#NR1" target="_self">&lt;=`</a>  <a href="card_1.html#K3">alef</a> 0
 <b>by </b><i><a class="ref" href="card_4.html#D1">CARD_4:def 1</a></i>;<br/></div>
<b>end;</b></div>

<b>assume </b><a NAME="E2:2"/>
 <a href="card_1.html#K1">Card</a> <span class="p1">(<span class="default"><a href="pre_topc.html#K2">[#]</a> <font color="Maroon">T</font></span>)</span> <a href="card_1.html#NR1" target="_self">&lt;=`</a>  <a href="card_1.html#K3">alef</a> 0
 ;<br/>

<a NAME="E3:2"/><b>then </b>
 <a href="pre_topc.html#K2">[#]</a> <font color="Maroon">T</font> is <a href="card_4.html#V1">countable</a>
 
<b>by </b><i><a class="ref" href="card_4.html#D1">CARD_4:def 1</a></i>;<br/>
<b>hence </b><a NAME="E4:2"/>
<font color="Maroon">T</font> is <a href="orders_4.html#V1">countable</a>
 <b>by </b><i/>;<br/>


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