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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E15">Th15</font></span>: <a NAME="T15"><span class="comment"><font color="firebrick">:: YELLOW18:15</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">A</font>, <font color="Olive" title="b2">B</font> being   <a href="altcat_1.html#NM4" title="ALTCAT_1:NM.4">category</a>  st <font color="Olive" title="b1">A</font>,<font color="Olive" title="b2">B</font> <a href="yellow18.html#R2" title="YELLOW18:pred.2">are_opposite</a>  holds <br/> <a href="yellow18.html#K2" title="YELLOW18:func.2">dualizing-func</a> (<font color="Olive" title="b1">A</font>,<font color="Olive" title="b2">B</font>) is  <a href="functor0.html#V21" title="FUNCTOR0:attr.21">bijective</a> </div></div>
