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<b>let </b><font color="Maroon">N</font> be   <a href="e_siec.html#NM2">e_net</a>;<br/>

<a NAME="E1:22"/><i><font color="Green">E16</font></i>: 
 <a href="relat_1.html#K1">dom</a> the <a href="e_siec.html#U1" target="_self">entrance</a> of <font color="Maroon">N</font> <a href="tarski.html#R1">c=</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">N</font>
 
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="22_1"><b>proof </b></a><div class="add">

<a NAME="E1:22_1"/>
the <a href="e_siec.html#U1" target="_self">entrance</a> of <font color="Maroon">N</font> <a href="tarski.html#R1">c=</a> <span class="p1"><a href="zfmisc_1.html#K2">[:</a><span class="default">the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">N</font>,the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">N</font></span><a href="zfmisc_1.html#K2">:]</a></span>
 
<b>by </b><i/>;<br/>
<b>hence </b><a NAME="E2:22_1"/>
 <a href="relat_1.html#K1">dom</a> the <a href="e_siec.html#U1" target="_self">entrance</a> of <font color="Maroon">N</font> <a href="tarski.html#R1">c=</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">N</font>
 <b>by </b><i><a class="ref" href="sysrel.html#T15">SYSREL:15</a></i>;<br/>


</div><b>end;</b></div>
<a NAME="E2:22"/><i><font color="Green">E21</font></i>: 
 <a href="relat_1.html#K2">rng</a> the <a href="e_siec.html#U1" target="_self">entrance</a> of <font color="Maroon">N</font> <a href="tarski.html#R1">c=</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">N</font>
 
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="22_2"><b>proof </b></a><div class="add">

<a NAME="E1:22_2"/>
the <a href="e_siec.html#U1" target="_self">entrance</a> of <font color="Maroon">N</font> <a href="tarski.html#R1">c=</a> <span class="p1"><a href="zfmisc_1.html#K2">[:</a><span class="default">the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">N</font>,the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">N</font></span><a href="zfmisc_1.html#K2">:]</a></span>
 
<b>by </b><i/>;<br/>
<b>hence </b><a NAME="E2:22_2"/>
 <a href="relat_1.html#K2">rng</a> the <a href="e_siec.html#U1" target="_self">entrance</a> of <font color="Maroon">N</font> <a href="tarski.html#R1">c=</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">N</font>
 <b>by </b><i><a class="ref" href="sysrel.html#T15">SYSREL:15</a></i>;<br/>


</div><b>end;</b></div>
<a NAME="E3:22"/><i><font color="Green">E22</font></i>: 
 <a href="relat_1.html#K1">dom</a> the <a href="e_siec.html#U2" target="_self">escape</a> of <font color="Maroon">N</font> <a href="tarski.html#R1">c=</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">N</font>
 
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="22_3"><b>proof </b></a><div class="add">

<a NAME="E1:22_3"/>
the <a href="e_siec.html#U2" target="_self">escape</a> of <font color="Maroon">N</font> <a href="tarski.html#R1">c=</a> <span class="p1"><a href="zfmisc_1.html#K2">[:</a><span class="default">the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">N</font>,the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">N</font></span><a href="zfmisc_1.html#K2">:]</a></span>
 
<b>by </b><i/>;<br/>
<b>hence </b><a NAME="E2:22_3"/>
 <a href="relat_1.html#K1">dom</a> the <a href="e_siec.html#U2" target="_self">escape</a> of <font color="Maroon">N</font> <a href="tarski.html#R1">c=</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">N</font>
 <b>by </b><i><a class="ref" href="sysrel.html#T15">SYSREL:15</a></i>;<br/>


</div><b>end;</b></div>
<a NAME="E4:22"/>
 <a href="relat_1.html#K2">rng</a> the <a href="e_siec.html#U2" target="_self">escape</a> of <font color="Maroon">N</font> <a href="tarski.html#R1">c=</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">N</font>
 
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="22_4"><b>proof </b></a><div class="add">

<a NAME="E1:22_4"/>
the <a href="e_siec.html#U2" target="_self">escape</a> of <font color="Maroon">N</font> <a href="tarski.html#R1">c=</a> <span class="p1"><a href="zfmisc_1.html#K2">[:</a><span class="default">the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">N</font>,the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">N</font></span><a href="zfmisc_1.html#K2">:]</a></span>
 
<b>by </b><i/>;<br/>
<b>hence </b><a NAME="E2:22_4"/>
 <a href="relat_1.html#K2">rng</a> the <a href="e_siec.html#U2" target="_self">escape</a> of <font color="Maroon">N</font> <a href="tarski.html#R1">c=</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">N</font>
 <b>by </b><i><a class="ref" href="sysrel.html#T15">SYSREL:15</a></i>;<br/>


</div><b>end;</b></div>
<b>hence </b><a NAME="E5:22"/>
(  <a href="relat_1.html#K1">dom</a> the <a href="e_siec.html#U1" target="_self">entrance</a> of <font color="Maroon">N</font> <a href="tarski.html#R1">c=</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">N</font> &amp;  <a href="relat_1.html#K2">rng</a> the <a href="e_siec.html#U1" target="_self">entrance</a> of <font color="Maroon">N</font> <a href="tarski.html#R1">c=</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">N</font> &amp;  <a href="relat_1.html#K1">dom</a> the <a href="e_siec.html#U2" target="_self">escape</a> of <font color="Maroon">N</font> <a href="tarski.html#R1">c=</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">N</font> &amp;  <a href="relat_1.html#K2">rng</a> the <a href="e_siec.html#U2" target="_self">escape</a> of <font color="Maroon">N</font> <a href="tarski.html#R1">c=</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">N</font> )
 <b>by </b><i>, , </i>;<br/>


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