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<div><span class="kw">theorem </span><a NAME="T151"><span class="comment"><font color="firebrick">:: ZF_LANG1:151</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">H</font> being   <a href="zf_lang.html#NM2" title="ZF_LANG:NM.2">ZF-formula</a> holds   <a href="zf_model.html#K2" title="ZF_MODEL:func.2">Free</a> <font color="Olive" title="b1">H</font> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a>  <a href="zf_lang1.html#K3" title="ZF_LANG1:func.3">variables_in</a> <font color="Olive" title="b1">H</font></div></div>
