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<div>:: <span class="kw">deftheorem </span><span class="lab"><font color="Green" title="E3">Def3</font></span>   defines <a href="proofs_1.html#M2" title="PROOFS_1:mode.2">Formula</a> <a onclick="hs(this)" href="javascript:()">PROOFS_1:def 3 : <br/></a><span> for <font color="Olive" title="b1">Fml</font> being   non  <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>   <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a> <br/>  for <font color="Olive">b<sub>2</sub></font> being    <a href="proofs_1.html#NM1" title="PROOFS_1:NM.1">Formula</a>  holds <br/> ( <font color="Olive">b<sub>2</sub></font> is    <a href="proofs_1.html#M2" title="PROOFS_1:mode.2">Formula</a> of <font color="Olive" title="b1">Fml</font> iff <font color="Olive">b<sub>2</sub></font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Olive" title="b1">Fml</font> );<br/></span></div>
