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<div><span class="kw">theorem </span><a NAME="T10"><span class="comment"><font color="firebrick">:: ZF_LANG1:10</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">p</font>, <font color="Olive" title="b2">q</font> being   <a href="zf_lang.html#NM2" title="ZF_LANG:NM.2">ZF-formula</a> holds  <font color="Olive" title="b1">p</font> <a href="zf_lang.html#K9" title="ZF_LANG:func.9">'or'</a> <font color="Olive" title="b2">q</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><a href="zf_lang.html#K5" title="ZF_LANG:func.5">'not'</a> <font color="Olive" title="b1">p</font></span>)</span> <a href="zf_lang.html#K10" title="ZF_LANG:func.10">=&gt;</a> <font color="Olive" title="b2">q</font> ;<br/></div></div>
