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<div><span class="kw">theorem </span><a NAME="T6"><span class="comment"><font color="firebrick">:: FF_SIEC:6</font></span><br/></a><div class="add">(  the <a href="struct_0.html#U1" title="STRUCT_0:sel.1">carrier</a> of <a href="ff_siec.html#K6" title="FF_SIEC:func.6">empty_f_net</a> <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="struct_0.html#U4" title="STRUCT_0:sel.4">carrier'</a> of <a href="ff_siec.html#K6" title="FF_SIEC:func.6">empty_f_net</a> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  &amp;  <a href="net_1.html#K1" title="NET_1:func.1">Flow</a> <a href="ff_siec.html#K6" title="FF_SIEC:func.6">empty_f_net</a> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  )</div></div>
