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<div><span class="kw">theorem </span><a NAME="T121"><span class="comment"><font color="firebrick">:: GLIB_000:121</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">G</font> being   <a href="glib_000.html#NM2" title="GLIB_000:NM.2">_Graph</a> holds <br/> (  not <font color="Olive" title="b1">G</font> is  <a href="glib_000.html#V4" title="GLIB_000:attr.4">_trivial</a>  iff  ex <font color="Olive" title="b2">H</font> being    <a href="glib_000.html#M1" title="GLIB_000:mode.1">Subgraph</a> of <font color="Olive" title="b1">G</font> st  not <font color="Olive" title="b2">H</font> is  <a href="glib_000.html#V9" title="GLIB_000:attr.9">spanning</a>  )</div></div>
