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<div>:: <span class="kw">deftheorem </span>   defines <a href="surreali.html#K10" title="SURREALI:func.10">inv</a> <a onclick="hs(this)" href="javascript:()">SURREALI:def 12 : <br/></a><span> for <font color="Olive" title="b1">x</font> being   <a href="surreal0.html#NM1" title="SURREAL0:NM.1">Surreal</a> holds   <a href="surreali.html#K10" title="SURREALI:func.10">inv</a> <font color="Olive" title="b1">x</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default"><a href="surreali.html#K9" title="SURREALI:func.9">No_inverse_op</a> <span class="p2">(<span class="default"><a href="surreal0.html#K12" title="SURREAL0:func.12">born</a> <font color="Olive" title="b1">x</font></span>)</span></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <font color="Olive" title="b1">x</font>;<br/></span></div>
