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<b>let </b><font color="Maroon">c<sub>8</sub></font> be   <a href="pre_topc.html#NM1">TopSpace</a>;<br/><b>let </b><font color="Maroon">c<sub>9</sub></font> be    <a href="pre_topc.html#M1">SubSpace</a> of <font color="Maroon">c<sub>8</sub></font>;<br/><b>let </b><font color="Maroon">c<sub>10</sub></font> be    <a href="pre_topc.html#M1">SubSpace</a> of <font color="Maroon">c<sub>9</sub></font>;<br/><b>let </b><font color="Maroon">c<sub>11</sub></font> be   <a href="struct_0.html#NM2">Subset</a> of <font color="Maroon">c<sub>10</sub></font>;<br/>







<a NAME="E1:3"/><i><font color="Green">E11</font></i>: 
the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">c<sub>9</sub></font> is   <a href="struct_0.html#NM2">Subset</a> of <font color="Maroon">c<sub>8</sub></font>
 
<b>by </b><i><a class="ref" href="tsep_1.html#T1">TSEP_1:1</a></i>;<br/>
<a NAME="E2:3"/>
the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">c<sub>10</sub></font> is   <a href="struct_0.html#NM2">Subset</a> of <font color="Maroon">c<sub>9</sub></font>
 
<b>by </b><i><a class="ref" href="tsep_1.html#T1">TSEP_1:1</a></i>;<br/>
<a NAME="E3:3"/><b>then </b>
<font color="Maroon">c<sub>11</sub></font> is   <a href="struct_0.html#NM2">Subset</a> of <font color="Maroon">c<sub>9</sub></font>
 
<b>by </b><i><a class="ref" href="xboole_1.html#T1">XBOOLE_1:1</a></i>;<br/>
<b>hence </b><a NAME="E4:3"/>
<font color="Maroon">c<sub>11</sub></font> is   <a href="struct_0.html#NM2">Subset</a> of <font color="Maroon">c<sub>8</sub></font>
 <b>by </b><i><a class="txt" href="toprealb.html#E1:3"><i><font color="Green">E11</font></i></a>, <a class="ref" href="xboole_1.html#T1">XBOOLE_1:1</a></i>;<br/>


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