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<b>reconsider </b><font color="Maroon" title="c1">z</font> =  <a href="numbers.html#K6" title="NUMBERS:func.6">0</a>  as  <a href="xxreal_0.html#V1" title="XXREAL_0:attr.1">ext-real</a>  <a href="ordinal1.html#NM1" title="ORDINAL1:NM.1">number</a>  ;<br/>
<b>take </b>
<font color="Maroon" title="c1">z</font>
; <a class="txt" onclick="hs(this)" href="javascript:()"><i><font color="Red">::  thesis: </font></i></a><span class="hide"> <font color="Maroon" title="c1">z</font> is <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">zero</a></span><br/>

<b>thus </b><a NAME="E2:28_3_1"/>
<font color="Maroon" title="c1">z</font> is <a href="xboole_0.html#V1" title="XBOOLE_0:attr.1">zero</a>
 ; <a class="txt" onclick="hs(this)" href="javascript:()"><i><font color="Red">::  thesis: </font></i></a><span class="hide"> verum</span><br/>


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