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<b>set </b><font color="Maroon" title="c5">G</font> =  <a href="pre_topc.html#G1" title="PRE_TOPC:aggr.1">TopStruct</a>(# the <a href="struct_0.html#U1" title="STRUCT_0:sel.1">carrier</a> of <font color="Maroon" title="c4">T</font>,the <a href="pre_topc.html#U1" title="PRE_TOPC:sel.1">topology</a> of <font color="Maroon" title="c4">T</font> #);<br/>
<b>let </b><font color="Maroon" title="c6">A</font>, <font color="Maroon" title="c7">B</font> be   <a href="struct_0.html#NM2" title="STRUCT_0:NM.2">Subset</a> of <a href="pre_topc.html#G1" title="PRE_TOPC:aggr.1">TopStruct</a>(# the <a href="struct_0.html#U1" title="STRUCT_0:sel.1">carrier</a> of <font color="Maroon" title="c4">T</font>,the <a href="pre_topc.html#U1" title="PRE_TOPC:sel.1">topology</a> of <font color="Maroon" title="c4">T</font> #); <i><font color="Red">:: according to </font></i><a class="ref" href="connsp_1.html#D2" title="CONNSP_1:def.2">CONNSP_1:def 2</a><br/>

<b>assume </b><b>that </b><br/><a NAME="E1:9_1_1"/><i><font color="Green" title="E5">A1</font></i>: 
 <a href="struct_0.html#K2" title="STRUCT_0:func.2">[#]</a> <a href="pre_topc.html#G1" title="PRE_TOPC:aggr.1">TopStruct</a>(# the <a href="struct_0.html#U1" title="STRUCT_0:sel.1">carrier</a> of <font color="Maroon" title="c4">T</font>,the <a href="pre_topc.html#U1" title="PRE_TOPC:sel.1">topology</a> of <font color="Maroon" title="c4">T</font> #) <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c6">A</font> <a href="subset_1.html#K4" title="SUBSET_1:func.4">\/</a> <font color="Maroon" title="c7">B</font>
 <b>and </b><br/><a NAME="E2:9_1_1"/><i><font color="Green" title="E6">A2</font></i>: 
<font color="Maroon" title="c6">A</font>,<font color="Maroon" title="c7">B</font> <a href="connsp_1.html#R1" title="CONNSP_1:pred.1">are_separated</a> 
 ;<br/>

<b>reconsider </b><font color="Maroon" title="c8">A1</font> = <font color="Maroon" title="c6">A</font>, <font color="Maroon" title="c9">B1</font> = <font color="Maroon" title="c7">B</font> as   <a href="struct_0.html#NM2" title="STRUCT_0:NM.2">Subset</a> of <font color="Maroon" title="c4">T</font> ;<br/>
<a NAME="E4:9_1_1"/><i><font color="Green" title="E7">A3</font></i>: 
 <a href="struct_0.html#K2" title="STRUCT_0:func.2">[#]</a> <font color="Maroon" title="c4">T</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c8">A1</font> <a href="subset_1.html#K4" title="SUBSET_1:func.4">\/</a> <font color="Maroon" title="c9">B1</font>
 
<b>by </b><i><a class="txt" href="topalg_3.html#E1:9_1_1"><i><font color="Green" title="E5">A1</font></i></a></i>;<br/>
<a NAME="E5:9_1_1"/>
<font color="Maroon" title="c8">A1</font>,<font color="Maroon" title="c9">B1</font> <a href="connsp_1.html#R1" title="CONNSP_1:pred.1">are_separated</a> 
 
<b>by </b><i><a class="txt" href="topalg_3.html#E2:9_1_1"><i><font color="Green" title="E6">A2</font></i></a>, <a class="ref" href="topalg_3.html#T7" target="_self" title="TOPALG_3:th.7">Th7</a></i>;<br/>
<a NAME="E6:9_1_1"/><b>then </b>
( <font color="Maroon" title="c8">A1</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="struct_0.html#K1" title="STRUCT_0:func.1">{}</a> <font color="Maroon" title="c4">T</font> or <font color="Maroon" title="c9">B1</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="struct_0.html#K1" title="STRUCT_0:func.1">{}</a> <font color="Maroon" title="c4">T</font> )
 
<b>by </b><i><a class="txt" href="topalg_3.html#E4:9_1_1"><i><font color="Green" title="E7">A3</font></i></a>, <a class="ref" href="connsp_1.html#D2" title="CONNSP_1:def.2">CONNSP_1:def 2</a></i>;<br/>
<b>hence </b><a NAME="E7:9_1_1"/>
( <font color="Maroon" title="c6">A</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="struct_0.html#K1" title="STRUCT_0:func.1">{}</a> <a href="pre_topc.html#G1" title="PRE_TOPC:aggr.1">TopStruct</a>(# the <a href="struct_0.html#U1" title="STRUCT_0:sel.1">carrier</a> of <font color="Maroon" title="c4">T</font>,the <a href="pre_topc.html#U1" title="PRE_TOPC:sel.1">topology</a> of <font color="Maroon" title="c4">T</font> #) or <font color="Maroon" title="c7">B</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="struct_0.html#K1" title="STRUCT_0:func.1">{}</a> <a href="pre_topc.html#G1" title="PRE_TOPC:aggr.1">TopStruct</a>(# the <a href="struct_0.html#U1" title="STRUCT_0:sel.1">carrier</a> of <font color="Maroon" title="c4">T</font>,the <a href="pre_topc.html#U1" title="PRE_TOPC:sel.1">topology</a> of <font color="Maroon" title="c4">T</font> #) )
 ;<br/>


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