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

<a NAME="E1:3"/>
 <a href="zf_lang1.html#K4">variables_in</a> <font color="Maroon">H</font> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><a href="relat_1.html#K2">rng</a> <font color="Maroon">H</font></span>)</span> <a href="subset_1.html#K6">\</a> <span class="p1"><a href="enumset1.html#K3">{</a><span class="default">0,1,2,3,4</span><a href="enumset1.html#K3">}</a></span>
 
<b>by </b><i><a class="ref" href="zf_lang1.html#D3">ZF_LANG1:def 3</a></i>;<br/>
<b>hence </b><a NAME="E2:3"/>
 <a href="zf_lang1.html#K4">variables_in</a> <font color="Maroon">H</font> is <a href="finset_1.html#V1">finite</a>
 ;<br/>


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