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<div><span class="kw">theorem </span><a NAME="T31"><span class="comment"><font color="firebrick">:: SURREALI:31</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">x</font> being   <a href="surreal0.html#NM1" title="SURREAL0:NM.1">Surreal</a>  st <font color="Olive" title="b1">x</font> is  <a href="surreali.html#V2" title="SURREALI:attr.2">positive</a>  holds <br/> <a href="surreali.html#K10" title="SURREALI:func.10">inv</a> <font color="Olive" title="b1">x</font> is   <a href="surreal0.html#NM1" title="SURREAL0:NM.1">Surreal</a> ;<br/></div></div>
