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<div><span class="kw">theorem </span><a NAME="T53"><span class="comment"><font color="firebrick">:: PREFER_1:53</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">A</font> being   <a href="zfmisc_1.html#V1" title="ZFMISC_1:attr.1">trivial</a>   <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a>  holds   <a href="prefer_1.html#K3" title="PREFER_1:func.3">IdPrefSpace</a> <font color="Olive" title="b1">A</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="prefer_1.html#K2" title="PREFER_1:func.2">PrefSpace</a> <font color="Olive" title="b1">A</font></div></div>
