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<span class="kw">let </span><font color="Maroon" title="c1">p</font> be   <a href="zf_lang.html#NM2" title="ZF_LANG:NM.2">ZF-formula</a>; <a class="txt" onclick="hs(this)" href="javascript:()"><span class="comment"><font color="firebrick">::  thesis: </font></span></a><span class="hide">  <a href="zf_lang.html#K20" title="ZF_LANG:func.20">the_argument_of</a> <span class="p1">(<span class="default"><a href="zf_lang.html#K6" title="ZF_LANG:func.6">'not'</a> <font color="Maroon" title="c1">p</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c1">p</font></span><br/>

<a NAME="E1:3"/>
 <a href="zf_lang.html#K6" title="ZF_LANG:func.6">'not'</a> <font color="Maroon" title="c1">p</font> is  <a href="zf_lang.html#V4" title="ZF_LANG:attr.4">negative</a> 
 
<span class="kw">by</span> <span class="lab"><a class="ref" href="zf_lang.html#T5" title="ZF_LANG:th.5">ZF_LANG:5</a></span>;<br/>
<span class="kw">hence </span><a NAME="E2:3"/>
 <a href="zf_lang.html#K20" title="ZF_LANG:func.20">the_argument_of</a> <span class="p1">(<span class="default"><a href="zf_lang.html#K6" title="ZF_LANG:func.6">'not'</a> <font color="Maroon" title="c1">p</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c1">p</font>
 <span class="kw">by</span> <span class="lab"><a class="ref" href="zf_lang.html#D30" title="ZF_LANG:def.30">ZF_LANG:def 30</a></span>; <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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