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<b>let </b><font color="Maroon">c<sub>1</sub></font> be   <a href="zf_lang.html#NM2">ZF-formula</a>;<br/>

<a NAME="E1:28"/>
( <font color="Maroon">c<sub>1</sub></font> <a href="funct_1.html#K1">.</a> 1 <a href="hidden.html#R1">=</a> 0 or <font color="Maroon">c<sub>1</sub></font> <a href="funct_1.html#K1">.</a> 1 <a href="hidden.html#R1">=</a> 1 or <font color="Maroon">c<sub>1</sub></font> <a href="funct_1.html#K1">.</a> 1 <a href="hidden.html#R1">=</a> 2 or <font color="Maroon">c<sub>1</sub></font> <a href="funct_1.html#K1">.</a> 1 <a href="hidden.html#R1">=</a> 3 or <font color="Maroon">c<sub>1</sub></font> <a href="funct_1.html#K1">.</a> 1 <a href="hidden.html#R1">=</a> 4 )
 
<b>by </b><i><a class="ref" href="zf_lang.html#T40">ZF_LANG:40</a></i>;<br/>
<b>hence </b><a NAME="E2:28"/>
( (  not <font color="Maroon">c<sub>1</sub></font> <a href="zf_lang.html#NR1" target="_self">is_equality</a>  or ( not <font color="Maroon">c<sub>1</sub></font> <a href="zf_lang.html#NR2" target="_self">is_membership</a>  &amp; not <font color="Maroon">c<sub>1</sub></font> is <a href="zf_lang.html#V4">negative</a> &amp; not <font color="Maroon">c<sub>1</sub></font> is <a href="zf_lang.html#V5">conjunctive</a> &amp; not <font color="Maroon">c<sub>1</sub></font> is <a href="zf_lang.html#V6">universal</a> ) ) &amp; (  not <font color="Maroon">c<sub>1</sub></font> <a href="zf_lang.html#NR2" target="_self">is_membership</a>  or ( not <font color="Maroon">c<sub>1</sub></font> is <a href="zf_lang.html#V4">negative</a> &amp; not <font color="Maroon">c<sub>1</sub></font> is <a href="zf_lang.html#V5">conjunctive</a> &amp; not <font color="Maroon">c<sub>1</sub></font> is <a href="zf_lang.html#V6">universal</a> ) ) &amp; (  not <font color="Maroon">c<sub>1</sub></font> is <a href="zf_lang.html#V4">negative</a> or ( not <font color="Maroon">c<sub>1</sub></font> is <a href="zf_lang.html#V5">conjunctive</a> &amp; not <font color="Maroon">c<sub>1</sub></font> is <a href="zf_lang.html#V6">universal</a> ) ) &amp; (  not <font color="Maroon">c<sub>1</sub></font> is <a href="zf_lang.html#V5">conjunctive</a> or  not <font color="Maroon">c<sub>1</sub></font> is <a href="zf_lang.html#V6">universal</a> ) )
 <b>by </b><i><a class="ref" href="zf_lang.html#T35">ZF_LANG:35</a>, <a class="ref" href="zf_lang.html#T36">ZF_LANG:36</a>, <a class="ref" href="zf_lang.html#T37">ZF_LANG:37</a>, <a class="ref" href="zf_lang.html#T38">ZF_LANG:38</a>, <a class="ref" href="zf_lang.html#T39">ZF_LANG:39</a></i>;<br/>


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