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<span class="kw">let </span><font color="Maroon" title="c1">X</font> be    <a href="hidden.html#M1" title="HIDDEN:mode.1">set</a> ; <a class="txt" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="Red">::  thesis: </font></span></a><span class="hide"> ( the <a href="net_1.html#U1" title="NET_1:sel.1">Places</a> of <span class="p1">(<span class="default"><a href="ff_siec.html#K2" title="FF_SIEC:func.2">Tempty_f_net</a> <font color="Maroon" title="c1">X</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c1">X</font> &amp; the <a href="net_1.html#U2" title="NET_1:sel.2">Transitions</a> of <span class="p1">(<span class="default"><a href="ff_siec.html#K2" title="FF_SIEC:func.2">Tempty_f_net</a> <font color="Maroon" title="c1">X</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  &amp; the <a href="net_1.html#U3" title="NET_1:sel.3">Flow</a> of <span class="p1">(<span class="default"><a href="ff_siec.html#K2" title="FF_SIEC:func.2">Tempty_f_net</a> <font color="Maroon" title="c1">X</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  )</span><br/>

<a NAME="E1:7"/>
 <a href="ff_siec.html#K2" title="FF_SIEC:func.2">Tempty_f_net</a> <font color="Maroon" title="c1">X</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="net_1.html#G1" title="NET_1:aggr.1">Net</a>(# <font color="Maroon" title="c1">X</font>,<a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> ,<a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  #)
 
<span class="kw">by</span> <span class="lab"><a class="ref" href="ff_siec.html#D4" target="_self" title="FF_SIEC:def.4">Def4</a>, <a class="ref" href="xboole_1.html#T65" title="XBOOLE_1:th.65">XBOOLE_1:65</a></span>;<br/>
<span class="kw">hence </span><a NAME="E2:7"/>
( the <a href="net_1.html#U1" title="NET_1:sel.1">Places</a> of <span class="p1">(<span class="default"><a href="ff_siec.html#K2" title="FF_SIEC:func.2">Tempty_f_net</a> <font color="Maroon" title="c1">X</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c1">X</font> &amp; the <a href="net_1.html#U2" title="NET_1:sel.2">Transitions</a> of <span class="p1">(<span class="default"><a href="ff_siec.html#K2" title="FF_SIEC:func.2">Tempty_f_net</a> <font color="Maroon" title="c1">X</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  &amp; the <a href="net_1.html#U3" title="NET_1:sel.3">Flow</a> of <span class="p1">(<span class="default"><a href="ff_siec.html#K2" title="FF_SIEC:func.2">Tempty_f_net</a> <font color="Maroon" title="c1">X</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  )
 ; <a class="txt" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="Red">::  thesis: </font></span></a><span class="hide"> verum</span><br/>


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