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<a NAME="E1:68_1_1"/><i><font color="Green" title="E31">A1</font></i>: 
 <a href="relat_1.html#K2" title="RELAT_1:func.2">rng</a> <span class="p1">(<span class="default"><font color="Maroon" title="c1">R</font> <a href="relat_1.html#K5" title="RELAT_1:func.5">*</a> <font color="Maroon" title="c2">S</font></span>)</span> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a>  <a href="relat_1.html#K2" title="RELAT_1:func.2">rng</a> <font color="Maroon" title="c2">S</font>
 
<b>by </b><i><a class="ref" href="relat_1.html#T45" target="_self" title="RELAT_1:th.45">Th45</a></i>;<br/>
<a NAME="E2:68_1_1"/>
not  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="relat_1.html#K2" title="RELAT_1:func.2">rng</a> <font color="Maroon" title="c2">S</font>
 
<b>by </b><i><a class="ref" href="relat_1.html#D9" target="_self" title="RELAT_1:def.9">Def9</a></i>;<br/>
<b>hence </b><a NAME="E3:68_1_1"/>
not  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a>  <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="relat_1.html#K2" title="RELAT_1:func.2">rng</a> <span class="p1">(<span class="default"><font color="Maroon" title="c1">R</font> <a href="relat_1.html#K5" title="RELAT_1:func.5">*</a> <font color="Maroon" title="c2">S</font></span>)</span>
 <b>by </b><i><a class="txt" href="relat_1.html#E1:68_1_1"><i><font color="Green" title="E31">A1</font></i></a></i>; <i><font color="Red">:: according to </font></i><a class="ref" href="relat_1.html#D9" target="_self" title="RELAT_1:def.9">RELAT_1:def 9</a><br/>


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