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<b>let </b><font color="Maroon">X</font> be  non <a href="struct_0.html#V3">empty</a> <a href="pre_topc.html#NM1">TopSpace</a>;<br/><b>let </b><font color="Maroon">M</font> be  non <a href="xboole_0.html#V1">empty</a>  <a href="hidden.html#M1">set</a> ;<br/>



<b>consider </b><font color="Maroon">F</font> being   <a href="struct_0.html#NM6">Function</a> of <span class="p1">(<span class="default"><a href="waybel26.html#K1" target="_self">oContMaps</a> <font color="Maroon">X</font>,<span class="p2">(<span class="default"><font color="Maroon">M</font> <a href="waybel26.html#NK2" target="_self">-TOP_prod</a> <span class="p3">(<span class="default"><font color="Maroon">M</font> <a href="pre_circ.html#K2">--&gt;</a> <a href="waybel18.html#K9">Sierpinski_Space</a> </span>)</span></span>)</span></span>)</span>,<span class="p1">(<span class="default"><font color="Maroon">M</font> <a href="waybel26.html#NK1" target="_self">-POS_prod</a> <span class="p2">(<span class="default"><font color="Maroon">M</font> <a href="pre_circ.html#K2">--&gt;</a> <span class="p3">(<span class="default"><a href="waybel26.html#K1" target="_self">oContMaps</a> <font color="Maroon">X</font>,<a href="waybel18.html#K9">Sierpinski_Space</a> </span>)</span></span>)</span></span>)</span><b> such that </b><br/><a NAME="E2:47"/><i><font color="Green">E45</font></i>: 
<font color="Maroon">F</font> is <a href="waybel_0.html#V23">isomorphic</a>
 <b>and </b><br/><a NAME="E3:47"/>
for <font color="Olive">f</font> being <a href="pre_topc.html#V5">continuous</a> <a href="struct_0.html#NM6">Function</a> of <font color="Maroon">X</font>,<span class="p1">(<span class="default"><font color="Maroon">M</font> <a href="waybel26.html#NK2" target="_self">-TOP_prod</a> <span class="p2">(<span class="default"><font color="Maroon">M</font> <a href="pre_circ.html#K2">--&gt;</a> <a href="waybel18.html#K9">Sierpinski_Space</a> </span>)</span></span>)</span> holds  <font color="Maroon">F</font> <a href="funct_1.html#K1">.</a> <font color="Olive">f</font> <a href="hidden.html#R1">=</a>  <a href="funct_6.html#K10">commute</a> <font color="Olive">f</font>
 <b>by </b><i/>;<br/>
<b>take </b>
<font color="Maroon">F</font>
; <i><font color="Red">:: according to </font></i><a class="ref" href="waybel_1.html#D8">WAYBEL_1:def 8</a><br/>

<b>thus </b><a NAME="E4:47"/>
<font color="Maroon">F</font> is <a href="waybel_0.html#V23">isomorphic</a>
 <b>by </b><i/>;<br/>


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