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<b>let </b><font color="Maroon">c<sub>22</sub></font> be   <a href="topreal2.html#NM1">Simple_closed_curve</a>;<br/>

<b>assume </b><a NAME="E1:148"/><i><font color="Green">E171</font></i>: 
<span class="p1"><a href="euclid.html#K23">|[</a><span class="default"><span class="p2">(<span class="default"><a href="real_1.html#K1">-</a> 1</span>)</span>,0</span><a href="euclid.html#K23">]|</a></span>,<span class="p1"><a href="euclid.html#K23">|[</a><span class="default">1,0</span><a href="euclid.html#K23">]|</a></span> <a href="jordan24.html#R1">realize-max-dist-in</a> <font color="Maroon">c<sub>22</sub></font>
 ;<br/>

<b>set </b><font color="Maroon">c<sub>23</sub></font> =  <a href="jordan6.html#K8">Upper_Arc</a> <font color="Maroon">c<sub>22</sub></font>;<br/>
<b>consider </b><font color="Maroon">c<sub>24</sub></font> being    <a href="borsuk_2.html#M1">Path</a> of <span class="p1"><a href="euclid.html#K23">|[</a><span class="default">0,3</span><a href="euclid.html#K23">]|</a></span>,<span class="p1"><a href="euclid.html#K23">|[</a><span class="default">0,<span class="p2">(<span class="default"><a href="real_1.html#K1">-</a> 3</span>)</span></span><a href="euclid.html#K23">]|</a></span>, <font color="Maroon">c<sub>25</sub></font> being   <a href="struct_0.html#NM7">Function</a> of <a href="topmetr.html#K5">I[01]</a> ,<span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="euclid.html#K15">TOP-REAL</a> 2</span>)</span> <a href="pre_topc.html#K3">|</a> <span class="p2">(<span class="default"><a href="topreal1.html#K3">LSeg</a> <span class="p3"><a href="euclid.html#K23">|[</a><span class="default">0,3</span><a href="euclid.html#K23">]|</a></span>,<span class="p3"><a href="euclid.html#K23">|[</a><span class="default">0,<span class="p4">(<span class="default"><a href="real_1.html#K1">-</a> 3</span>)</span></span><a href="euclid.html#K23">]|</a></span></span>)</span></span>)</span><b> such that </b><br/><a NAME="E3:148"/><i><font color="Green">E172</font></i>: 
(  <a href="relset_1.html#K5">rng</a> <font color="Maroon">c<sub>25</sub></font> <a href="hidden.html#R1">=</a>  <a href="topreal1.html#K3">LSeg</a> <span class="p1"><a href="euclid.html#K23">|[</a><span class="default">0,3</span><a href="euclid.html#K23">]|</a></span>,<span class="p1"><a href="euclid.html#K23">|[</a><span class="default">0,<span class="p2">(<span class="default"><a href="real_1.html#K1">-</a> 3</span>)</span></span><a href="euclid.html#K23">]|</a></span> &amp; <font color="Maroon">c<sub>24</sub></font> <a href="funct_2.html#R1">=</a> <font color="Maroon">c<sub>25</sub></font> )
 <b>by </b><i><a class="ref" href="jordan.html#T43" target="_self">Th43</a></i>;<br/>
<a NAME="E4:148"/>
( <span class="p1"><a href="euclid.html#K23">|[</a><span class="default"><span class="p2">(<span class="default"><a href="real_1.html#K1">-</a> 1</span>)</span>,0</span><a href="euclid.html#K23">]|</a></span> <a href="hidden.html#R1">=</a>  <a href="pscomp_1.html#K27">W-min</a> <font color="Maroon">c<sub>22</sub></font> &amp; <span class="p1"><a href="euclid.html#K23">|[</a><span class="default">1,0</span><a href="euclid.html#K23">]|</a></span> <a href="hidden.html#R1">=</a>  <a href="pscomp_1.html#K31">E-max</a> <font color="Maroon">c<sub>22</sub></font> )
 
<b>by </b><i><a class="txt" href="jordan.html#E1:148"><i><font color="Green">E171</font></i></a>, <a class="ref" href="jordan.html#T79" target="_self">Th79</a>, <a class="ref" href="jordan.html#T80" target="_self">Th80</a></i>;<br/>
<a NAME="E5:148"/><b>then </b>
 <a href="jordan6.html#K8">Upper_Arc</a> <font color="Maroon">c<sub>22</sub></font> <a href="topreal1.html#R1">is_an_arc_of</a> <span class="p1"><a href="euclid.html#K23">|[</a><span class="default"><span class="p2">(<span class="default"><a href="real_1.html#K1">-</a> 1</span>)</span>,0</span><a href="euclid.html#K23">]|</a></span>,<span class="p1"><a href="euclid.html#K23">|[</a><span class="default">1,0</span><a href="euclid.html#K23">]|</a></span>
 
<b>by </b><i><a class="ref" href="jordan6.html#D8">JORDAN6:def 8</a></i>;<br/>
<b>then consider </b><font color="Maroon">c<sub>26</sub></font> being    <a href="borsuk_2.html#M1">Path</a> of <span class="p1"><a href="euclid.html#K23">|[</a><span class="default"><span class="p2">(<span class="default"><a href="real_1.html#K1">-</a> 1</span>)</span>,0</span><a href="euclid.html#K23">]|</a></span>,<span class="p1"><a href="euclid.html#K23">|[</a><span class="default">1,0</span><a href="euclid.html#K23">]|</a></span>, <font color="Maroon">c<sub>27</sub></font> being   <a href="struct_0.html#NM7">Function</a> of <a href="topmetr.html#K5">I[01]</a> ,<span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="euclid.html#K15">TOP-REAL</a> 2</span>)</span> <a href="pre_topc.html#K3">|</a> <span class="p2">(<span class="default"><a href="jordan6.html#K8">Upper_Arc</a> <font color="Maroon">c<sub>22</sub></font></span>)</span></span>)</span><b> such that </b><br/><a NAME="E7:148"/><i><font color="Green">E173</font></i>: 
(  <a href="relset_1.html#K5">rng</a> <font color="Maroon">c<sub>27</sub></font> <a href="hidden.html#R1">=</a>  <a href="jordan6.html#K8">Upper_Arc</a> <font color="Maroon">c<sub>22</sub></font> &amp; <font color="Maroon">c<sub>26</sub></font> <a href="funct_2.html#R1">=</a> <font color="Maroon">c<sub>27</sub></font> )
 <b>by </b><i><a class="ref" href="jordan.html#T42" target="_self">Th42</a></i>;<br/>
<a NAME="E8:148"/><i><font color="Green">E174</font></i>: 
 <a href="jordan6.html#K8">Upper_Arc</a> <font color="Maroon">c<sub>22</sub></font> <a href="tarski.html#R1">c=</a> <font color="Maroon">c<sub>22</sub></font>
 
<b>by </b><i><a class="ref" href="jordan6.html#T76">JORDAN6:76</a></i>;<br/>
<a NAME="E9:148"/><i><font color="Green">E175</font></i>: 
<font color="Maroon">c<sub>22</sub></font> <a href="tarski.html#R1">c=</a>  <a href="jgraph_6.html#K2">closed_inside_of_rectangle</a> <span class="p1">(<span class="default"><a href="real_1.html#K1">-</a> 1</span>)</span>,1,<span class="p1">(<span class="default"><a href="real_1.html#K1">-</a> 3</span>)</span>,3
 
<b>by </b><i><a class="txt" href="jordan.html#E1:148"><i><font color="Green">E171</font></i></a>, <a class="ref" href="jordan.html#T71" target="_self">Th71</a></i>;<br/>
<a NAME="E10:148"/><i><font color="Green">E176</font></i>: 
( <span class="p1"><a href="euclid.html#K23">|[</a><span class="default"><span class="p2">(<span class="default"><a href="real_1.html#K1">-</a> 1</span>)</span>,0</span><a href="euclid.html#K23">]|</a></span> <a href="hidden.html#R2">in</a> <font color="Maroon">c<sub>22</sub></font> &amp; <span class="p1"><a href="euclid.html#K23">|[</a><span class="default">1,0</span><a href="euclid.html#K23">]|</a></span> <a href="hidden.html#R2">in</a> <font color="Maroon">c<sub>22</sub></font> )
 
<b>by </b><i><a class="txt" href="jordan.html#E1:148"><i><font color="Green">E171</font></i></a>, <a class="ref" href="jordan24.html#D1">JORDAN24:def 1</a></i>;<br/>
<a NAME="E11:148"/><i><font color="Green">E177</font></i>: 
the <a href="struct_0.html#U1">carrier</a> of <span class="p1">(<span class="default"><a href="topreala.html#K1">Trectangle</a> <span class="p2">(<span class="default"><a href="real_1.html#K1">-</a> 1</span>)</span>,1,<span class="p2">(<span class="default"><a href="real_1.html#K1">-</a> 3</span>)</span>,3</span>)</span> <a href="hidden.html#R1">=</a>  <a href="jgraph_6.html#K2">closed_inside_of_rectangle</a> <span class="p1">(<span class="default"><a href="real_1.html#K1">-</a> 1</span>)</span>,1,<span class="p1">(<span class="default"><a href="real_1.html#K1">-</a> 3</span>)</span>,3
 
<b>by </b><i><a class="ref" href="jordan1.html#T1">JORDAN1:1</a></i>;<br/>
<b>reconsider </b><font color="Maroon">c<sub>28</sub></font> = <span class="p1"><a href="euclid.html#K23">|[</a><span class="default"><span class="p2">(<span class="default"><a href="real_1.html#K1">-</a> 1</span>)</span>,0</span><a href="euclid.html#K23">]|</a></span>, <font color="Maroon">c<sub>29</sub></font> = <span class="p1"><a href="euclid.html#K23">|[</a><span class="default">1,0</span><a href="euclid.html#K23">]|</a></span>, <font color="Maroon">c<sub>30</sub></font> = <span class="p1"><a href="euclid.html#K23">|[</a><span class="default">0,3</span><a href="euclid.html#K23">]|</a></span>, <font color="Maroon">c<sub>31</sub></font> = <span class="p1"><a href="euclid.html#K23">|[</a><span class="default">0,<span class="p2">(<span class="default"><a href="real_1.html#K1">-</a> 3</span>)</span></span><a href="euclid.html#K23">]|</a></span> as   <a href="pre_topc.html#NM2">Point</a> of <span class="p1">(<span class="default"><a href="topreala.html#K1">Trectangle</a> <span class="p2">(<span class="default"><a href="real_1.html#K1">-</a> 1</span>)</span>,1,<span class="p2">(<span class="default"><a href="real_1.html#K1">-</a> 3</span>)</span>,3</span>)</span> <b>by </b><i><a class="txt" href="jordan.html#E10:148"><i><font color="Green">E176</font></i></a>, <a class="txt" href="jordan.html#E9:148"><i><font color="Green">E175</font></i></a>, <a class="txt" href="jordan.html#E141"><i><font color="Green">Lemma124</font></i></a>, <a class="txt" href="jordan.html#E142"><i><font color="Green">Lemma125</font></i></a>, <a class="txt" href="jordan.html#E148"><i><font color="Green">Lemma131</font></i></a>, <a class="ref" href="jordan1.html#T1">JORDAN1:1</a></i>;<br/>
<a NAME="E13:148"/>
 <a href="relset_1.html#K5">rng</a> <font color="Maroon">c<sub>26</sub></font> <a href="tarski.html#R1">c=</a> the <a href="struct_0.html#U1">carrier</a> of <span class="p1">(<span class="default"><a href="topreala.html#K1">Trectangle</a> <span class="p2">(<span class="default"><a href="real_1.html#K1">-</a> 1</span>)</span>,1,<span class="p2">(<span class="default"><a href="real_1.html#K1">-</a> 3</span>)</span>,3</span>)</span>
 
<b>by </b><i><a class="txt" href="jordan.html#E7:148"><i><font color="Green">E173</font></i></a>, <a class="txt" href="jordan.html#E8:148"><i><font color="Green">E174</font></i></a>, <a class="txt" href="jordan.html#E9:148"><i><font color="Green">E175</font></i></a>, <a class="txt" href="jordan.html#E11:148"><i><font color="Green">E177</font></i></a>, <a class="ref" href="xboole_1.html#T1">XBOOLE_1:1</a></i>;<br/>
<b>then reconsider </b><font color="Maroon">c<sub>32</sub></font> = <font color="Maroon">c<sub>26</sub></font> as    <a href="borsuk_2.html#M1">Path</a> of <font color="Maroon">c<sub>28</sub></font>,<font color="Maroon">c<sub>29</sub></font> <b>by </b><i><a class="ref" href="jordan.html#T30" target="_self">Th30</a></i>;<br/>
<a NAME="E15:148"/>
 <a href="topreal1.html#K3">LSeg</a> <span class="p1"><a href="euclid.html#K23">|[</a><span class="default">0,3</span><a href="euclid.html#K23">]|</a></span>,<span class="p1"><a href="euclid.html#K23">|[</a><span class="default">0,<span class="p2">(<span class="default"><a href="real_1.html#K1">-</a> 3</span>)</span></span><a href="euclid.html#K23">]|</a></span> <a href="tarski.html#R1">c=</a>  <a href="jgraph_6.html#K2">closed_inside_of_rectangle</a> <span class="p1">(<span class="default"><a href="real_1.html#K1">-</a> 1</span>)</span>,1,<span class="p1">(<span class="default"><a href="real_1.html#K1">-</a> 3</span>)</span>,3
 
<b>by </b><i><a class="txt" href="jordan.html#E141"><i><font color="Green">Lemma124</font></i></a>, <a class="txt" href="jordan.html#E148"><i><font color="Green">Lemma131</font></i></a>, <a class="txt" href="jordan.html#E142"><i><font color="Green">Lemma125</font></i></a>, <a class="ref" href="jordan1.html#D1">JORDAN1:def 1</a></i>;<br/>
<b>then reconsider </b><font color="Maroon">c<sub>33</sub></font> = <font color="Maroon">c<sub>24</sub></font> as    <a href="borsuk_2.html#M1">Path</a> of <font color="Maroon">c<sub>30</sub></font>,<font color="Maroon">c<sub>31</sub></font> <b>by </b><i><a class="txt" href="jordan.html#E3:148"><i><font color="Green">E172</font></i></a>, <a class="txt" href="jordan.html#E11:148"><i><font color="Green">E177</font></i></a>, <a class="ref" href="jordan.html#T30" target="_self">Th30</a></i>;<br/>
<b>consider </b><font color="Maroon">c<sub>34</sub></font>, <font color="Maroon">c<sub>35</sub></font> being   <a href="pre_topc.html#NM2">Point</a> of <a href="topmetr.html#K5">I[01]</a> <b> such that </b><br/><a NAME="E18:148"/><i><font color="Green">E178</font></i>: 
<font color="Maroon">c<sub>32</sub></font> <a href="funct_2.html#K3">.</a> <font color="Maroon">c<sub>34</sub></font> <a href="hidden.html#R1">=</a> <font color="Maroon">c<sub>33</sub></font> <a href="funct_2.html#K3">.</a> <font color="Maroon">c<sub>35</sub></font>
 <b>by </b><i><a class="txt" href="jordan.html#E95"><i><font color="Green">Lemma82</font></i></a>, <a class="txt" href="jordan.html#E96"><i><font color="Green">Lemma83</font></i></a>, <a class="txt" href="jordan.html#E100"><i><font color="Green">Lemma87</font></i></a>, <a class="txt" href="jordan.html#E102"><i><font color="Green">Lemma89</font></i></a>, <a class="ref" href="jgraph_8.html#T6">JGRAPH_8:6</a></i>;<br/>
<a NAME="E19:148"/>
(  <a href="relset_1.html#K4">dom</a> <font color="Maroon">c<sub>32</sub></font> <a href="hidden.html#R1">=</a> the <a href="struct_0.html#U1">carrier</a> of <a href="topmetr.html#K5">I[01]</a>  &amp;  <a href="relset_1.html#K4">dom</a> <font color="Maroon">c<sub>33</sub></font> <a href="hidden.html#R1">=</a> the <a href="struct_0.html#U1">carrier</a> of <a href="topmetr.html#K5">I[01]</a>  )
 
<b>by </b><i><a class="ref" href="funct_2.html#D1">FUNCT_2:def 1</a></i>;<br/>
<a NAME="E20:148"/><b>then </b>
( <font color="Maroon">c<sub>33</sub></font> <a href="funct_2.html#K3">.</a> <font color="Maroon">c<sub>35</sub></font> <a href="hidden.html#R2">in</a>  <a href="relset_1.html#K5">rng</a> <font color="Maroon">c<sub>24</sub></font> &amp; <font color="Maroon">c<sub>32</sub></font> <a href="funct_2.html#K3">.</a> <font color="Maroon">c<sub>34</sub></font> <a href="hidden.html#R2">in</a>  <a href="relset_1.html#K5">rng</a> <font color="Maroon">c<sub>26</sub></font> )
 
<b>by </b><i><a class="ref" href="funct_1.html#D5">FUNCT_1:def 5</a></i>;<br/>
<b>hence </b><a NAME="E21:148"/>
 <a href="topreal1.html#K3">LSeg</a> <span class="p1"><a href="euclid.html#K23">|[</a><span class="default">0,3</span><a href="euclid.html#K23">]|</a></span>,<span class="p1"><a href="euclid.html#K23">|[</a><span class="default">0,<span class="p2">(<span class="default"><a href="real_1.html#K1">-</a> 3</span>)</span></span><a href="euclid.html#K23">]|</a></span> <a href="subset_1.html#R2">meets</a> <font color="Maroon">c<sub>22</sub></font>
 <b>by </b><i><a class="txt" href="jordan.html#E8:148"><i><font color="Green">E174</font></i></a>, <a class="txt" href="jordan.html#E3:148"><i><font color="Green">E172</font></i></a>, <a class="txt" href="jordan.html#E7:148"><i><font color="Green">E173</font></i></a>, <a class="txt" href="jordan.html#E18:148"><i><font color="Green">E178</font></i></a>, <a class="ref" href="xboole_0.html#T3">XBOOLE_0:3</a></i>;<br/>


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