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<b>let </b><font color="Maroon">c<sub>1</sub></font> be    <a href="hidden.html#M1">set</a> ;<br/>

<a NAME="E1:10"/><i><font color="Green">E4</font></i>: 
 <a href="xboole_0.html#K1">{}</a>  <a href="tarski.html#R1">c=</a> <span class="p1"><a href="zfmisc_1.html#K2">[:</a><span class="default"><font color="Maroon">c<sub>1</sub></font>,<font color="Maroon">c<sub>1</sub></font></span><a href="zfmisc_1.html#K2">:]</a></span>
 
<b>by </b><i><a class="ref" href="xboole_1.html#T2">XBOOLE_1:2</a></i>;<br/>
<a NAME="E2:10"/>
<a href="xboole_0.html#K1">{}</a>  <a href="relat_1.html#K5">*</a> <span class="p1">(<span class="default"><a href="xboole_0.html#K1">{}</a>  <a href="xboole_0.html#K4">\</a> <span class="p2">(<span class="default"><a href="relat_1.html#K6">id</a> <font color="Maroon">c<sub>1</sub></font></span>)</span></span>)</span> <a href="hidden.html#R1">=</a>  <a href="xboole_0.html#K1">{}</a> 
 
;<br/>
<b>hence </b><a NAME="E3:10"/>
 <a href="e_siec.html#G1" target="_self">G_Net</a>(# <font color="Maroon">c<sub>1</sub></font>,<a href="xboole_0.html#K1">{}</a> ,<a href="xboole_0.html#K1">{}</a>  #) is   <a href="e_siec.html#NM2">e_net</a>
 <b>by </b><i><a class="txt" href="e_siec.html#E1:10"><i><font color="Green">E4</font></i></a>, <a class="ref" href="e_siec.html#D2" target="_self">Def2</a>, <a class="ref" href="e_siec.html#D3" target="_self">Def3</a></i>;<br/>


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