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<div>:: <span class="kw">deftheorem </span><span class="lab"><font color="Green" title="E13">Def11</font></span>   defines <a href="proofs_1.html#V6" title="PROOFS_1:attr.6">-extending</a> <a onclick="hs(this)" href="javascript:()">PROOFS_1:def 12 : <br/></a><span> for <font color="Olive" title="b1">B</font>, <font color="Olive" title="b2">B1</font> being    <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a>  holds <br/> ( <font color="Olive" title="b2">B1</font> is <font color="Olive" title="b1">B</font> <a href="proofs_1.html#V6" title="PROOFS_1:attr.6">-extending</a>  iff <font color="Olive" title="b1">B</font> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a> <font color="Olive" title="b2">B1</font> );<br/></span></div>
