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<div><span class="kw">theorem </span><a NAME="T14"><span class="comment"><font color="firebrick">:: BSPACE:14</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">x</font> being    <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a>  holds  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> <a href="bspace.html#K3" title="BSPACE:func.3">@</a> <font color="Olive" title="b1">x</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="struct_0.html#K4" title="STRUCT_0:func.4">0.</a> <a href="bspace.html#K2" title="BSPACE:func.2">Z_2</a> <span class="kw">by</span> <span class="lab"><a class="ref" href="bspace.html#D3" target="_self" onmouseover="rs('bspace/D3')" onmouseout="rh()">Def3</a></span>;<br/></div></div>
