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<b>let </b><font color="Maroon">S</font> be  non <a href="xboole_0.html#V1">empty</a>  <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">R</font> be  <a href="partfun1.html#V1">total</a>  <a href="relset_1.html#M2">Relation</a> of <font color="Maroon">S</font>,<font color="Maroon">S</font>;<br/><b>let </b><font color="Maroon">BASSIGN</font> be  non <a href="xboole_0.html#V1">empty</a> <a href="subset_1.html#NM2">Subset</a> of <span class="p1">(<span class="default"><a href="modelc_1.html#K32" target="_self">ModelSP</a> <font color="Maroon">S</font></span>)</span>;<br/><b>let </b><font color="Maroon">f</font> be   <a href="modelc_1.html#NM2">Assign</a> of <span class="p1">(<span class="default"><a href="modelc_1.html#K50" target="_self">CTLModel</a> <font color="Maroon">R</font>,<font color="Maroon">BASSIGN</font></span>)</span>;<br/><b>let </b><font color="Maroon">G1</font> be   <a href="subset_1.html#NM2">Subset</a> of <font color="Maroon">S</font>, <font color="Maroon">G2</font> be   <a href="subset_1.html#NM2">Subset</a> of <font color="Maroon">S</font>;<br/>









<b>assume </b><a NAME="E1:160"/>
<font color="Maroon">G1</font> <a href="tarski.html#R1">c=</a> <font color="Maroon">G2</font>
 ;<br/>

<a NAME="E2:160"/><b>then </b>
for <font color="Olive">s</font> being   <a href="subset_1.html#M1">Element</a> of <font color="Maroon">S</font>  st <font color="Olive">s</font> <a href="modelc_1.html#R3" target="_self">|=</a>  <a href="modelc_1.html#K54" target="_self">Tau</a> <font color="Maroon">G1</font>,<font color="Maroon">R</font>,<font color="Maroon">BASSIGN</font> holds <br/><font color="Olive">s</font> <a href="modelc_1.html#R3" target="_self">|=</a>  <a href="modelc_1.html#K54" target="_self">Tau</a> <font color="Maroon">G2</font>,<font color="Maroon">R</font>,<font color="Maroon">BASSIGN</font>
 
<b>by </b><i/>;<br/>
<a NAME="E3:160"/><b>then </b>
for <font color="Olive">s</font> being   <a href="subset_1.html#M1">Element</a> of <font color="Maroon">S</font>  st <font color="Olive">s</font> <a href="modelc_1.html#R3" target="_self">|=</a>  <a href="modelc_1.html#K55" target="_self">Fax</a> <font color="Maroon">f</font>,<span class="p1">(<span class="default"><a href="modelc_1.html#K54" target="_self">Tau</a> <font color="Maroon">G1</font>,<font color="Maroon">R</font>,<font color="Maroon">BASSIGN</font></span>)</span> holds <br/><font color="Olive">s</font> <a href="modelc_1.html#R3" target="_self">|=</a>  <a href="modelc_1.html#K55" target="_self">Fax</a> <font color="Maroon">f</font>,<span class="p1">(<span class="default"><a href="modelc_1.html#K54" target="_self">Tau</a> <font color="Maroon">G2</font>,<font color="Maroon">R</font>,<font color="Maroon">BASSIGN</font></span>)</span>
 
<b>by </b><i/>;<br/>
<b>hence </b><a NAME="E4:160"/>
 <a href="modelc_1.html#K56" target="_self">SigFaxTau</a> <font color="Maroon">f</font>,<font color="Maroon">G1</font>,<font color="Maroon">R</font>,<font color="Maroon">BASSIGN</font> <a href="tarski.html#R1">c=</a>  <a href="modelc_1.html#K56" target="_self">SigFaxTau</a> <font color="Maroon">f</font>,<font color="Maroon">G2</font>,<font color="Maroon">R</font>,<font color="Maroon">BASSIGN</font>
 <b>by </b><i/>;<br/>


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