<?xml version="1.0"?>
<div>:: <span class="kw">deftheorem </span>   defines <a href="intpro_1.html#K14" title="INTPRO_1:func.14">S4-Taut</a> <a onclick="hs(this)" href="javascript:()">INTPRO_1:def 24 : <br/></a><span> <a href="intpro_1.html#K14" title="INTPRO_1:func.14">S4-Taut</a>  <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="intpro_1.html#K13" title="INTPRO_1:func.13">CnS4</a> <span class="p1">(<span class="default"><a href="subset_1.html#K1" title="SUBSET_1:func.1">{}</a> <a href="intpro_1.html#K1" title="INTPRO_1:func.1">MC-wff</a></span>)</span>;<br/></span></div>
