<?xml version="1.0"?>
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<b>let </b><font color="Maroon">a</font> be  <a href="xreal_0.html#V1">real</a>  <a href="ordinal1.html#NM1" target="_self">number</a> ;<br/><b>let </b><font color="Maroon">b</font> be  <a href="xreal_0.html#V1">real</a>  <a href="ordinal1.html#NM1" target="_self">number</a> ;<br/>



<b>assume </b><a NAME="E1:21"/><i><font color="Green">E32</font></i>: 
<font color="Maroon">a</font> <a href="xxreal_0.html#R1">&lt;</a> <font color="Maroon">b</font>
 ;<br/>

<b>reconsider </b><font color="Maroon">A</font> = the <a href="struct_0.html#U1">carrier</a> of <span class="p1">(<span class="default"><a href="topmetr.html#K4">Closed-Interval-TSpace</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span>, <font color="Maroon">B</font> = the <a href="struct_0.html#U1">carrier</a> of <span class="p1">(<span class="default"><a href="topmetr.html#K4">Closed-Interval-TSpace</a> 0,1</span>)</span> as    <a href="hidden.html#M1">set</a>  ;<br/>
<b>set </b><font color="Maroon">L</font> =  <a href="treal_1.html#K3" target="_self">L[01]</a> <span class="p1">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span>,<span class="p1">(<span class="default"><font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span>;<br/>
<b>set </b><font color="Maroon">P</font> =  <a href="treal_1.html#K4" target="_self">P[01]</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<span class="p1">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> 0,1</span>)</span>,<span class="p1">(<span class="default">0,1 <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span>;<br/>
<b>reconsider </b><font color="Maroon">L0</font> =  <a href="treal_1.html#K3" target="_self">L[01]</a> <span class="p1">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span>,<span class="p1">(<span class="default"><font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span> as   <a href="funct_2.html#NM1">Function</a> of <font color="Maroon">B</font>,<font color="Maroon">A</font> ;<br/>
<b>reconsider </b><font color="Maroon">P0</font> =  <a href="treal_1.html#K4" target="_self">P[01]</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<span class="p1">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> 0,1</span>)</span>,<span class="p1">(<span class="default">0,1 <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span> as   <a href="funct_2.html#NM1">Function</a> of <font color="Maroon">A</font>,<font color="Maroon">B</font> ;<br/>
<i><font color="Green">E39</font></i>:  <a href="partfun1.html#K6">id</a> the <a href="struct_0.html#U1">carrier</a> of <span class="p1">(<span class="default"><a href="topmetr.html#K4">Closed-Interval-TSpace</a> 0,1</span>)</span> = 
 <a href="grcat_1.html#K7">id</a> <span class="p1">(<span class="default"><a href="topmetr.html#K4">Closed-Interval-TSpace</a> 0,1</span>)</span>
<b>by </b><i><a class="ref" href="grcat_1.html#D11">GRCAT_1:def 11</a></i>
<br/>.= 
<span class="p1">(<span class="default"><a href="treal_1.html#K4" target="_self">P[01]</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<span class="p2">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> 0,1</span>)</span>,<span class="p2">(<span class="default">0,1 <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span></span>)</span> <a href="partfun1.html#K1">*</a> <span class="p1">(<span class="default"><a href="treal_1.html#K3" target="_self">L[01]</a> <span class="p2">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span>,<span class="p2">(<span class="default"><font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span></span>)</span>
<b>by </b><i>, </i>
;<br/>
<a NAME="E6:21"/><b>then </b><i><font color="Green">E43</font></i>: 
(  <a href="treal_1.html#K3" target="_self">L[01]</a> <span class="p1">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span>,<span class="p1">(<span class="default"><font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span> is <a href="funct_1.html#V2">one-to-one</a> &amp;  <a href="relset_1.html#K5">rng</a> <span class="p1">(<span class="default"><a href="treal_1.html#K4" target="_self">P[01]</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<span class="p2">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> 0,1</span>)</span>,<span class="p2">(<span class="default">0,1 <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span></span>)</span> <a href="hidden.html#R1">=</a> the <a href="struct_0.html#U1">carrier</a> of <span class="p1">(<span class="default"><a href="topmetr.html#K4">Closed-Interval-TSpace</a> 0,1</span>)</span> )
 
<b>by </b><i><a class="ref" href="funct_2.html#T29">FUNCT_2:29</a></i>;<br/>
<a NAME="E7:21"/><b>then </b><i><font color="Green">E45</font></i>: 
 <a href="relset_1.html#K5">rng</a> <span class="p1">(<span class="default"><a href="treal_1.html#K4" target="_self">P[01]</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<span class="p2">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> 0,1</span>)</span>,<span class="p2">(<span class="default">0,1 <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span></span>)</span> <a href="hidden.html#R1">=</a>  <a href="pre_topc.html#K2">[#]</a> <span class="p1">(<span class="default"><a href="topmetr.html#K4">Closed-Interval-TSpace</a> 0,1</span>)</span>
 
;<br/>
<i><font color="Green">E46</font></i>:  <a href="partfun1.html#K6">id</a> the <a href="struct_0.html#U1">carrier</a> of <span class="p1">(<span class="default"><a href="topmetr.html#K4">Closed-Interval-TSpace</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span> = 
 <a href="grcat_1.html#K7">id</a> <span class="p1">(<span class="default"><a href="topmetr.html#K4">Closed-Interval-TSpace</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span>
<b>by </b><i><a class="ref" href="grcat_1.html#D11">GRCAT_1:def 11</a></i>
<br/>.= 
<span class="p1">(<span class="default"><a href="treal_1.html#K3" target="_self">L[01]</a> <span class="p2">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span>,<span class="p2">(<span class="default"><font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span></span>)</span> <a href="partfun1.html#K1">*</a> <span class="p1">(<span class="default"><a href="treal_1.html#K4" target="_self">P[01]</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<span class="p2">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> 0,1</span>)</span>,<span class="p2">(<span class="default">0,1 <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span></span>)</span>
<b>by </b><i>, </i>
;<br/>
<a NAME="E9:21"/><b>then </b><i><font color="Green">E47</font></i>: 
(  <a href="treal_1.html#K4" target="_self">P[01]</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<span class="p1">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> 0,1</span>)</span>,<span class="p1">(<span class="default">0,1 <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span> is <a href="funct_1.html#V2">one-to-one</a> &amp;  <a href="relset_1.html#K5">rng</a> <span class="p1">(<span class="default"><a href="treal_1.html#K3" target="_self">L[01]</a> <span class="p2">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span>,<span class="p2">(<span class="default"><font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span></span>)</span> <a href="hidden.html#R1">=</a> the <a href="struct_0.html#U1">carrier</a> of <span class="p1">(<span class="default"><a href="topmetr.html#K4">Closed-Interval-TSpace</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span> )
 
<b>by </b><i><a class="ref" href="funct_2.html#T29">FUNCT_2:29</a></i>;<br/>
<a NAME="E10:21"/><b>then </b><i><font color="Green">E50</font></i>: 
 <a href="relset_1.html#K5">rng</a> <span class="p1">(<span class="default"><a href="treal_1.html#K3" target="_self">L[01]</a> <span class="p2">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span>,<span class="p2">(<span class="default"><font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span></span>)</span> <a href="hidden.html#R1">=</a>  <a href="pre_topc.html#K2">[#]</a> <span class="p1">(<span class="default"><a href="topmetr.html#K4">Closed-Interval-TSpace</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span>
 
;<br/>
<a NAME="E11:21"/>
 <a href="relset_1.html#K4">dom</a> <span class="p1">(<span class="default"><a href="treal_1.html#K3" target="_self">L[01]</a> <span class="p2">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span>,<span class="p2">(<span class="default"><font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span></span>)</span> <a href="hidden.html#R1">=</a> the <a href="struct_0.html#U1">carrier</a> of <span class="p1">(<span class="default"><a href="topmetr.html#K4">Closed-Interval-TSpace</a> 0,1</span>)</span>
 
<b>by </b><i><a class="ref" href="funct_2.html#D1">FUNCT_2:def 1</a></i>;<br/>
<a NAME="E12:21"/><b>then </b><i><font color="Green">E51</font></i>: 
 <a href="relset_1.html#K4">dom</a> <span class="p1">(<span class="default"><a href="treal_1.html#K3" target="_self">L[01]</a> <span class="p2">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span>,<span class="p2">(<span class="default"><font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span></span>)</span> <a href="hidden.html#R1">=</a>  <a href="pre_topc.html#K2">[#]</a> <span class="p1">(<span class="default"><a href="topmetr.html#K4">Closed-Interval-TSpace</a> 0,1</span>)</span>
 
;<br/>
<a NAME="E13:21"/>
 <a href="relset_1.html#K4">dom</a> <span class="p1">(<span class="default"><a href="treal_1.html#K4" target="_self">P[01]</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<span class="p2">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> 0,1</span>)</span>,<span class="p2">(<span class="default">0,1 <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span></span>)</span> <a href="hidden.html#R1">=</a> the <a href="struct_0.html#U1">carrier</a> of <span class="p1">(<span class="default"><a href="topmetr.html#K4">Closed-Interval-TSpace</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span>
 
<b>by </b><i><a class="ref" href="funct_2.html#D1">FUNCT_2:def 1</a></i>;<br/>
<a NAME="E14:21"/><b>then </b><i><font color="Green">E64</font></i>: 
 <a href="relset_1.html#K4">dom</a> <span class="p1">(<span class="default"><a href="treal_1.html#K4" target="_self">P[01]</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<span class="p2">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> 0,1</span>)</span>,<span class="p2">(<span class="default">0,1 <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span></span>)</span> <a href="hidden.html#R1">=</a>  <a href="pre_topc.html#K2">[#]</a> <span class="p1">(<span class="default"><a href="topmetr.html#K4">Closed-Interval-TSpace</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span>
 
;<br/>
<a NAME="E15:21"/><i><font color="Green">E65</font></i>: 
<span class="p1">(<span class="default"><a href="treal_1.html#K3" target="_self">L[01]</a> <span class="p2">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span>,<span class="p2">(<span class="default"><font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span></span>)</span> <a href="tops_2.html#NK3" target="_self">"</a>  <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><a href="treal_1.html#K3" target="_self">L[01]</a> <span class="p2">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span>,<span class="p2">(<span class="default"><font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span></span>)</span> <a href="funct_1.html#K2">"</a> 
 
<b>by </b><i>, <a class="ref" href="treal_1.html#T1" target="_self">Th1</a>, <a class="ref" href="tops_2.html#D4">TOPS_2:def 4</a></i>;<br/>
<a NAME="E16:21"/><i><font color="Green">E68</font></i>: 
<span class="p1">(<span class="default"><a href="treal_1.html#K4" target="_self">P[01]</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<span class="p2">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> 0,1</span>)</span>,<span class="p2">(<span class="default">0,1 <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span></span>)</span> <a href="tops_2.html#NK3" target="_self">"</a>  <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><a href="treal_1.html#K4" target="_self">P[01]</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<span class="p2">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> 0,1</span>)</span>,<span class="p2">(<span class="default">0,1 <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span></span>)</span> <a href="funct_1.html#K2">"</a> 
 
<b>by </b><i>, <a class="ref" href="treal_1.html#T1" target="_self">Th1</a>, <a class="ref" href="tops_2.html#D4">TOPS_2:def 4</a></i>;<br/>
<a NAME="E17:21"/><i><font color="Green">E69</font></i>: 
 <a href="treal_1.html#K4" target="_self">P[01]</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<span class="p1">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> 0,1</span>)</span>,<span class="p1">(<span class="default">0,1 <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><a href="treal_1.html#K3" target="_self">L[01]</a> <span class="p2">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span>,<span class="p2">(<span class="default"><font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span></span>)</span> <a href="funct_1.html#K2">"</a> 
 
<b>by </b><i>, , <a class="ref" href="treal_1.html#T1" target="_self">Th1</a>, <a class="ref" href="funct_2.html#T36">FUNCT_2:36</a></i>;<br/>
<a NAME="E18:21"/><i><font color="Green">E70</font></i>: 
 <a href="treal_1.html#K3" target="_self">L[01]</a> <span class="p1">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span>,<span class="p1">(<span class="default"><font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><a href="treal_1.html#K4" target="_self">P[01]</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<span class="p2">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> 0,1</span>)</span>,<span class="p2">(<span class="default">0,1 <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span></span>)</span> <a href="funct_1.html#K2">"</a> 
 
<b>by </b><i>, , <a class="ref" href="treal_1.html#T1" target="_self">Th1</a>, <a class="ref" href="funct_2.html#T36">FUNCT_2:36</a></i>;<br/>
<a NAME="E19:21"/><i><font color="Green">E72</font></i>: 
 <a href="treal_1.html#K3" target="_self">L[01]</a> <span class="p1">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span>,<span class="p1">(<span class="default"><font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span> is  <a href="pre_topc.html#V5">continuous</a> <a href="struct_0.html#NM6">Function</a> of <span class="p1">(<span class="default"><a href="topmetr.html#K4">Closed-Interval-TSpace</a> 0,1</span>)</span>,<span class="p1">(<span class="default"><a href="topmetr.html#K4">Closed-Interval-TSpace</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span>
 
<b>by </b><i>, </i>;<br/>
<a NAME="E20:21"/><i><font color="Green">E73</font></i>: 
 <a href="treal_1.html#K3" target="_self">L[01]</a> <span class="p1">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span>,<span class="p1">(<span class="default"><font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span> is <a href="pre_topc.html#V5">continuous</a>
 
<b>by </b><i>, </i>;<br/>
<a NAME="E21:21"/><i><font color="Green">E76</font></i>: 
 <a href="treal_1.html#K4" target="_self">P[01]</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<span class="p1">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> 0,1</span>)</span>,<span class="p1">(<span class="default">0,1 <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span> is  <a href="pre_topc.html#V5">continuous</a> <a href="struct_0.html#NM6">Function</a> of <span class="p1">(<span class="default"><a href="topmetr.html#K4">Closed-Interval-TSpace</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span>,<span class="p1">(<span class="default"><a href="topmetr.html#K4">Closed-Interval-TSpace</a> 0,1</span>)</span>
 
<b>by </b><i>, </i>;<br/>
<a NAME="E22:21"/><i><font color="Green">E77</font></i>: 
 <a href="treal_1.html#K4" target="_self">P[01]</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<span class="p1">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> 0,1</span>)</span>,<span class="p1">(<span class="default">0,1 <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span> is <a href="pre_topc.html#V5">continuous</a>
 
<b>by </b><i>, </i>;<br/>
<b>thus </b><a NAME="E23:21"/>
 <a href="treal_1.html#K3" target="_self">L[01]</a> <span class="p1">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span>,<span class="p1">(<span class="default"><font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span> <a href="tops_2.html#NR1" target="_self">is_homeomorphism</a> 
 <b>by </b><i>, , <a class="ref" href="treal_1.html#T2" target="_self">Th2</a>, <a class="ref" href="treal_1.html#T3" target="_self">Th3</a>, , , <a class="txt" href="treal_1.html#E6"><i><font color="Green">Lemma35</font></i></a>, <a class="ref" href="tops_2.html#D5">TOPS_2:def 5</a></i>;<br/>

<b>thus </b><a NAME="E24:21"/>
<span class="p1">(<span class="default"><a href="treal_1.html#K3" target="_self">L[01]</a> <span class="p2">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span>,<span class="p2">(<span class="default"><font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span></span>)</span> <a href="tops_2.html#NK3" target="_self">"</a>  <a href="funct_2.html#R2">=</a>  <a href="treal_1.html#K4" target="_self">P[01]</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<span class="p1">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> 0,1</span>)</span>,<span class="p1">(<span class="default">0,1 <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span>
 <b>by </b><i>, , , <a class="ref" href="treal_1.html#T1" target="_self">Th1</a>, <a class="ref" href="funct_2.html#T36">FUNCT_2:36</a></i>;<br/>

<b>thus </b><a NAME="E25:21"/>
 <a href="treal_1.html#K4" target="_self">P[01]</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<span class="p1">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> 0,1</span>)</span>,<span class="p1">(<span class="default">0,1 <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span> <a href="tops_2.html#NR1" target="_self">is_homeomorphism</a> 
 <b>by </b><i><a class="txt" href="treal_1.html#E5"><i><font color="Green">Lemma30</font></i></a>, , <a class="ref" href="treal_1.html#T1" target="_self">Th1</a>, <a class="txt" href="treal_1.html#E4"><i><font color="Green">Lemma28</font></i></a>, <a class="txt" href="treal_1.html#E1:21"><i><font color="Green">E32</font></i></a>, , <a class="ref" href="treal_1.html#T4" target="_self">Th4</a>, <a class="ref" href="tops_2.html#D5">TOPS_2:def 5</a></i>;<br/>

<b>thus </b><a NAME="E26:21"/>
<span class="p1">(<span class="default"><a href="treal_1.html#K4" target="_self">P[01]</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<span class="p2">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> 0,1</span>)</span>,<span class="p2">(<span class="default">0,1 <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span></span>)</span> <a href="tops_2.html#NK3" target="_self">"</a>  <a href="funct_2.html#R2">=</a>  <a href="treal_1.html#K3" target="_self">L[01]</a> <span class="p1">(<span class="default"><a href="treal_1.html#K1" target="_self">(#)</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span>,<span class="p1">(<span class="default"><font color="Maroon">a</font>,<font color="Maroon">b</font> <a href="treal_1.html#K2" target="_self">(#)</a> </span>)</span>
 <b>by </b><i><a class="txt" href="treal_1.html#E5"><i><font color="Green">Lemma30</font></i></a>, , , <a class="ref" href="treal_1.html#T1" target="_self">Th1</a>, <a class="ref" href="funct_2.html#T36">FUNCT_2:36</a></i>;<br/>


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