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<span class="kw">consider </span><font color="Maroon" title="c2">f</font> being   <a href="funct_2.html#NM1" title="FUNCT_2:NM.1">Function</a> of <a href="zf_lang.html#K1" title="ZF_LANG:func.1">VAR</a> ,<font color="Maroon" title="c1">D</font>;<br/>
<a NAME="E2:10_1_1"/>
<font color="Maroon" title="c2">f</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="zf_model.html#K3" title="ZF_MODEL:func.3">VAL</a> <font color="Maroon" title="c1">D</font>
 
<span class="kw">by</span> <span class="lab"><a class="ref" href="zf_model.html#D2" target="_self" title="ZF_MODEL:def.2">Def2</a></span>;<br/>
<span class="kw">hence </span><a NAME="E3:10_1_1"/>
not  <a href="zf_model.html#K3" title="ZF_MODEL:func.3">VAL</a> <font color="Maroon" title="c1">D</font> is  <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a> 
 ; <a class="txt" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="Red">::  thesis: </font></span></a><span class="hide"> verum</span><br/>


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