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<span class="kw">let </span><font color="Maroon" title="c4">x</font> be    <a href="hidden.html#M1" title="HIDDEN:mode.1">set</a> ; <a class="txt" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> ( <font color="Maroon" title="c4">x</font> is <font color="Maroon" title="c3">I</font> <a href="fomodel2.html#V2" title="FOMODEL2:attr.2">-extension</a>  implies <font color="Maroon" title="c4">x</font> is  <a href="funct_1.html#V1" title="FUNCT_1:attr.1">Function-like</a>  )</span><br/>

<span class="kw">assume </span><a NAME="E1:39_2_1"/>
<font color="Maroon" title="c4">x</font> is <font color="Maroon" title="c3">I</font> <a href="fomodel2.html#V2" title="FOMODEL2:attr.2">-extension</a> 
 ; <a class="txt" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> <font color="Maroon" title="c4">x</font> is  <a href="funct_1.html#V1" title="FUNCT_1:attr.1">Function-like</a> </span><br/>

<a NAME="E2:39_2_1"/><span class="kw">then </span>
<font color="Maroon" title="c4">x</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c3">I</font> <a href="fomodel2.html#K11" title="FOMODEL2:func.11">===</a> 
 
<span class="kw">by</span> <span class="lab"><a class="ref" href="fomodel2.html#D12" target="_self" title="FOMODEL2:def.12">DefExtension</a></span>;<br/>
<span class="kw">hence </span><a NAME="E3:39_2_1"/>
<font color="Maroon" title="c4">x</font> is  <a href="funct_1.html#V1" title="FUNCT_1:attr.1">Function-like</a> 
 ; <a class="txt" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide"> verum</span><br/>


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