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<b>let </b><font color="Maroon">c<sub>1</sub></font> be   <a href="e_siec.html#NM2">e_net</a>;<br/>

<i><font color="Green">E13</font></i>:  <a href="e_siec.html#K10" target="_self">e_Flow</a> <font color="Maroon">c<sub>1</sub></font> = 
<span class="p1">(<span class="default"><span class="p2">(<span class="default">the <a href="e_siec.html#U1" target="_self">entrance</a> of <font color="Maroon">c<sub>1</sub></font> <a href="relat_1.html#K4">~</a> </span>)</span> <a href="xboole_0.html#K2">\/</a> the <a href="e_siec.html#U2" target="_self">escape</a> of <font color="Maroon">c<sub>1</sub></font></span>)</span> <a href="xboole_0.html#K4">\</a> <span class="p1">(<span class="default"><a href="relat_1.html#K6">id</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">c<sub>1</sub></font></span>)</span>

<br/>.= 
<span class="p1">(<span class="default"><span class="p2">(<span class="default">the <a href="e_siec.html#U1" target="_self">entrance</a> of <font color="Maroon">c<sub>1</sub></font> <a href="relat_1.html#K4">~</a> </span>)</span> <a href="xboole_0.html#K4">\</a> <span class="p2">(<span class="default"><a href="relat_1.html#K6">id</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">c<sub>1</sub></font></span>)</span></span>)</span> <a href="xboole_0.html#K2">\/</a> <span class="p1">(<span class="default">the <a href="e_siec.html#U2" target="_self">escape</a> of <font color="Maroon">c<sub>1</sub></font> <a href="xboole_0.html#K4">\</a> <span class="p2">(<span class="default"><a href="relat_1.html#K6">id</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">c<sub>1</sub></font></span>)</span></span>)</span>
<b>by </b><i><a class="ref" href="xboole_1.html#T42">XBOOLE_1:42</a></i>
;<br/>
<i><font color="Green">E14</font></i>: <span class="p1">(<span class="default">the <a href="e_siec.html#U1" target="_self">entrance</a> of <font color="Maroon">c<sub>1</sub></font> <a href="relat_1.html#K4">~</a> </span>)</span> <a href="xboole_0.html#K4">\</a> <span class="p1">(<span class="default"><a href="relat_1.html#K6">id</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">c<sub>1</sub></font></span>)</span> = 
<span class="p1">(<span class="default">the <a href="e_siec.html#U1" target="_self">entrance</a> of <font color="Maroon">c<sub>1</sub></font> <a href="relat_1.html#K4">~</a> </span>)</span> <a href="xboole_0.html#K4">\</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="relat_1.html#K6">id</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">c<sub>1</sub></font></span>)</span> <a href="relat_1.html#K4">~</a> </span>)</span>
<b>by </b><i><a class="ref" href="relat_1.html#T72">RELAT_1:72</a></i>
<br/>.= 
<span class="p1">(<span class="default">the <a href="e_siec.html#U1" target="_self">entrance</a> of <font color="Maroon">c<sub>1</sub></font> <a href="xboole_0.html#K4">\</a> <span class="p2">(<span class="default"><a href="relat_1.html#K6">id</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">c<sub>1</sub></font></span>)</span></span>)</span> <a href="relat_1.html#K4">~</a> 
<b>by </b><i><a class="ref" href="relat_1.html#T41">RELAT_1:41</a></i>
;<br/>
<a NAME="E3:30"/>
the <a href="e_siec.html#U1" target="_self">entrance</a> of <font color="Maroon">c<sub>1</sub></font> <a href="xboole_0.html#K4">\</a> <span class="p1">(<span class="default"><a href="relat_1.html#K6">id</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">c<sub>1</sub></font></span>)</span> <a href="tarski.html#R1">c=</a> <span class="p1"><a href="zfmisc_1.html#K2">[:</a><span class="default"><span class="p2">(<span class="default"><a href="e_siec.html#K9" target="_self">e_Transitions</a> <font color="Maroon">c<sub>1</sub></font></span>)</span>,<span class="p2">(<span class="default"><a href="e_siec.html#K8" target="_self">e_Places</a> <font color="Maroon">c<sub>1</sub></font></span>)</span></span><a href="zfmisc_1.html#K2">:]</a></span>
 
<b>by </b><i><a class="ref" href="e_siec.html#T24" target="_self">Th24</a></i>;<br/>
<a NAME="E4:30"/><b>then </b><i><font color="Green">E15</font></i>: 
<span class="p1">(<span class="default">the <a href="e_siec.html#U1" target="_self">entrance</a> of <font color="Maroon">c<sub>1</sub></font> <a href="relat_1.html#K4">~</a> </span>)</span> <a href="xboole_0.html#K4">\</a> <span class="p1">(<span class="default"><a href="relat_1.html#K6">id</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">c<sub>1</sub></font></span>)</span> <a href="tarski.html#R1">c=</a> <span class="p1"><a href="zfmisc_1.html#K2">[:</a><span class="default"><span class="p2">(<span class="default"><a href="e_siec.html#K8" target="_self">e_Places</a> <font color="Maroon">c<sub>1</sub></font></span>)</span>,<span class="p2">(<span class="default"><a href="e_siec.html#K9" target="_self">e_Transitions</a> <font color="Maroon">c<sub>1</sub></font></span>)</span></span><a href="zfmisc_1.html#K2">:]</a></span>
 
<b>by </b><i><a class="txt" href="e_siec.html#E2:30"><i><font color="Green">E14</font></i></a>, <a class="ref" href="sysrel.html#T16">SYSREL:16</a></i>;<br/>
<a NAME="E5:30"/>
the <a href="e_siec.html#U2" target="_self">escape</a> of <font color="Maroon">c<sub>1</sub></font> <a href="xboole_0.html#K4">\</a> <span class="p1">(<span class="default"><a href="relat_1.html#K6">id</a> the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">c<sub>1</sub></font></span>)</span> <a href="tarski.html#R1">c=</a> <span class="p1"><a href="zfmisc_1.html#K2">[:</a><span class="default"><span class="p2">(<span class="default"><a href="e_siec.html#K9" target="_self">e_Transitions</a> <font color="Maroon">c<sub>1</sub></font></span>)</span>,<span class="p2">(<span class="default"><a href="e_siec.html#K8" target="_self">e_Places</a> <font color="Maroon">c<sub>1</sub></font></span>)</span></span><a href="zfmisc_1.html#K2">:]</a></span>
 
<b>by </b><i><a class="ref" href="e_siec.html#T24" target="_self">Th24</a></i>;<br/>
<b>hence </b><a NAME="E6:30"/>
 <a href="e_siec.html#K10" target="_self">e_Flow</a> <font color="Maroon">c<sub>1</sub></font> <a href="tarski.html#R1">c=</a> <span class="p1"><a href="zfmisc_1.html#K2">[:</a><span class="default"><span class="p2">(<span class="default"><a href="e_siec.html#K8" target="_self">e_Places</a> <font color="Maroon">c<sub>1</sub></font></span>)</span>,<span class="p2">(<span class="default"><a href="e_siec.html#K9" target="_self">e_Transitions</a> <font color="Maroon">c<sub>1</sub></font></span>)</span></span><a href="zfmisc_1.html#K2">:]</a></span> <a href="xboole_0.html#K2">\/</a> <span class="p1"><a href="zfmisc_1.html#K2">[:</a><span class="default"><span class="p2">(<span class="default"><a href="e_siec.html#K9" target="_self">e_Transitions</a> <font color="Maroon">c<sub>1</sub></font></span>)</span>,<span class="p2">(<span class="default"><a href="e_siec.html#K8" target="_self">e_Places</a> <font color="Maroon">c<sub>1</sub></font></span>)</span></span><a href="zfmisc_1.html#K2">:]</a></span>
 <b>by </b><i><a class="txt" href="e_siec.html#E1:30"><i><font color="Green">E13</font></i></a>, <a class="txt" href="e_siec.html#E4:30"><i><font color="Green">E15</font></i></a>, <a class="ref" href="xboole_1.html#T13">XBOOLE_1:13</a></i>;<br/>


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