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<b>set </b><font color="Maroon">c<sub>2</sub></font> = <span class="p1">{<span class="default"> <font color="Olive">b<sub>1</sub></font> where B is   <a href="setfam_1.html#NM1">Subset-Family</a> of <font color="Maroon">c<sub>1</sub></font> : <font color="Olive">b<sub>1</sub></font> is   <a href="coh_sp.html#NM1">Coherence_Space</a> </span>}</span> ;<br/>
<b>reconsider </b><font color="Maroon">c<sub>3</sub></font> =  <a href="zfmisc_1.html#K1">bool</a> <font color="Maroon">c<sub>1</sub></font> as   <a href="setfam_1.html#NM1">Subset-Family</a> of <font color="Maroon">c<sub>1</sub></font> <b>by </b><i><a class="ref" href="zfmisc_1.html#D1">ZFMISC_1:def 1</a></i>;<br/>
<a NAME="E2:21_1_1"/>
<font color="Maroon">c<sub>3</sub></font> is   <a href="coh_sp.html#NM1">Coherence_Space</a>
 
<b>by </b><i><a class="ref" href="coh_sp.html#T2" target="_self">Th2</a></i>;<br/>
<a NAME="E3:21_1_1"/><b>then </b>
<font color="Maroon">c<sub>3</sub></font> <a href="hidden.html#R2">in</a> <span class="p1">{<span class="default"> <font color="Olive">b<sub>1</sub></font> where B is   <a href="setfam_1.html#NM1">Subset-Family</a> of <font color="Maroon">c<sub>1</sub></font> : <font color="Olive">b<sub>1</sub></font> is   <a href="coh_sp.html#NM1">Coherence_Space</a> </span>}</span> 
 
;<br/>
<b>hence </b><a NAME="E4:21_1_1"/>
not  <a href="coh_sp.html#K3" target="_self">CSp</a> <font color="Maroon">c<sub>1</sub></font> is <a href="xboole_0.html#V1">empty</a>
 ;<br/>


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