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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E10">bag2b</font></span>: <a NAME="T9"><span class="comment"><font color="firebrick">:: FIELD_14:9</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">Z</font> being   non  <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">empty</a>   <a href="hidden.html#M2" title="HIDDEN:mode.2">set</a> <br/>  for <font color="Olive" title="b2">B</font> being   <a href="pre_poly.html#NM2" title="PRE_POLY:NM.2">bag</a> of <font color="Olive" title="b1">Z</font><br/>  for <font color="Olive" title="b3">o1</font>, <font color="Olive" title="b4">o2</font> being    <a href="hidden.html#M1" title="HIDDEN:mode.1">object</a>   st <font color="Olive" title="b2">B</font> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <font color="Olive" title="b3">o1</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="field_14.html#K3" title="FIELD_14:func.3">card</a> <font color="Olive" title="b2">B</font> &amp; <font color="Olive" title="b4">o2</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a> <font color="Olive" title="b3">o1</font> holds <br/><font color="Olive" title="b2">B</font> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <font color="Olive" title="b4">o2</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="numbers.html#K5" title="NUMBERS:func.5">0</a> </div></div>
