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<b>consider </b><font color="Maroon">X</font> being  <a href="vectsp_1.html#V3">strict</a> <a href="funcsdom.html#NM1">Ring</a>;<br/>
<b>set </b><font color="Maroon">D</font> = <span class="p1"><a href="tarski.html#K1">{</a><span class="default"><font color="Maroon">X</font></span><a href="tarski.html#K1">}</a></span>;<br/>
<a NAME="E2:36_1_1"/><i><font color="Green">E31</font></i>: 
for <font color="Olive">x</font> being   <a href="subset_1.html#M1">Element</a> of <span class="p1"><a href="tarski.html#K1">{</a><span class="default"><font color="Maroon">X</font></span><a href="tarski.html#K1">}</a></span> holds  <font color="Olive">x</font> is  <a href="vectsp_1.html#V3">strict</a> <a href="funcsdom.html#NM1">Ring</a>
 
<b>by </b><i><a class="ref" href="tarski.html#D1">TARSKI:def 1</a></i>;<br/>
<b>take </b>
<span class="p1"><a href="tarski.html#K1">{</a><span class="default"><font color="Maroon">X</font></span><a href="tarski.html#K1">}</a></span>
;<br/>

<b>thus </b><a NAME="E3:36_1_1"/>
( <span class="p1"><a href="tarski.html#K1">{</a><span class="default"><font color="Maroon">X</font></span><a href="tarski.html#K1">}</a></span> is <a href="ringcat1.html#V4" target="_self">Ring_DOMAIN-like</a> &amp; not <span class="p1"><a href="tarski.html#K1">{</a><span class="default"><font color="Maroon">X</font></span><a href="tarski.html#K1">}</a></span> is <a href="xboole_0.html#V1">empty</a> )
 <b>by </b><i>, <a class="ref" href="ringcat1.html#T3" target="_self">Th3</a></i>;<br/>


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