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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E5">Th4</font></span>: <a NAME="T7"><span class="comment"><font color="firebrick">:: FIELD_4:7</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">F</font>, <font color="Olive" title="b2">E</font> being   <a href="vectsp_1.html#NM5" title="VECTSP_1:NM.5">Field</a> holds <br/> ( <font color="Olive" title="b2">E</font> is   <a href="field_4.html#NM4" title="FIELD_4:NM.4">FieldExtension</a> of <font color="Olive" title="b1">F</font> iff <font color="Olive" title="b1">F</font> is    <a href="ec_pf_1.html#M1" title="EC_PF_1:mode.1">Subfield</a> of <font color="Olive" title="b2">E</font> )</div></div>
