<?xml version="1.0"?>
<div class="add">

<b>let </b><font color="Maroon" title="c1">T</font>, <font color="Maroon" title="c2">S</font> be   <a href="normsp_1.html#NM1" title="NORMSP_1:NM.1">RealNormSpace</a>;<br/><b>let </b><font color="Maroon" title="c3">f</font> be   <a href="struct_0.html#NM10" title="STRUCT_0:NM.10">PartFunc</a> of <font color="Maroon" title="c2">S</font>,<font color="Maroon" title="c1">T</font>;<br/><b>let </b><font color="Maroon" title="c4">Y</font> be   <a href="struct_0.html#NM2" title="STRUCT_0:NM.2">Subset</a> of <font color="Maroon" title="c2">S</font>;<br/>







<b>assume </b><b>that </b><br/><a NAME="E1:54"/><i><font color="Green" title="E42">A1</font></i>: 
<font color="Maroon" title="c4">Y</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a>  <a href="xboole_0.html#K1" title="XBOOLE_0:func.1">{}</a> 
 <b>and </b><br/><a NAME="E2:54"/><i><font color="Green" title="E43">A2</font></i>: 
<font color="Maroon" title="c4">Y</font> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a>  <a href="relset_1.html#K4" title="RELSET_1:func.4">dom</a> <font color="Maroon" title="c3">f</font>
 <b>and </b><br/><a NAME="E3:54"/><i><font color="Green" title="E44">A3</font></i>: 
<font color="Maroon" title="c4">Y</font> is <a href="nfcont_1.html#V1" title="NFCONT_1:attr.1">compact</a>
 <b>and </b><br/><a NAME="E4:54"/><i><font color="Green" title="E45">A4</font></i>: 
<font color="Maroon" title="c3">f</font> <a href="nfcont_1.html#R3" title="NFCONT_1:pred.3">is_continuous_on</a> <font color="Maroon" title="c4">Y</font>
 ;<br/>

<i><font color="Green" title="E46">A5</font></i>:  <a href="relset_1.html#K4" title="RELSET_1:func.4">dom</a> <span class="p1">(<span class="default"><font color="Maroon" title="c3">f</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <font color="Maroon" title="c4">Y</font></span>)</span> = 
<span class="p1">(<span class="default"><a href="relset_1.html#K4" title="RELSET_1:func.4">dom</a> <font color="Maroon" title="c3">f</font></span>)</span> <a href="subset_1.html#K9" title="SUBSET_1:func.9">/\</a> <font color="Maroon" title="c4">Y</font>
<b>by </b><i><a class="ref" href="relat_1.html#T90" title="RELAT_1:th.90">RELAT_1:90</a></i>
<br/>.= 
<font color="Maroon" title="c4">Y</font>
<b>by </b><i><a class="txt" href="nfcont_1.html#E2:54"><i><font color="Green" title="E43">A2</font></i></a>, <a class="ref" href="xboole_1.html#T28" title="XBOOLE_1:th.28">XBOOLE_1:28</a></i>
;<br/>
<a NAME="E6:54"/>
<font color="Maroon" title="c3">f</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <font color="Maroon" title="c4">Y</font> <a href="nfcont_1.html#R3" title="NFCONT_1:pred.3">is_continuous_on</a> <font color="Maroon" title="c4">Y</font>
 
<div><a class="txt" onclick="hs2(this)" href="javascript:()" title="54_2"><b>proof </b></a><div class="add">

<b>thus </b><a NAME="E1:54_2"/>
<font color="Maroon" title="c4">Y</font> <a href="tarski.html#R1" title="TARSKI:pred.1">c=</a>  <a href="relset_1.html#K4" title="RELSET_1:func.4">dom</a> <span class="p1">(<span class="default"><font color="Maroon" title="c3">f</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <font color="Maroon" title="c4">Y</font></span>)</span>
 <b>by </b><i><a class="txt" href="nfcont_1.html#E5:54"><i><font color="Green" title="E46">A5</font></i></a></i>; <i><font color="Red">:: according to </font></i><a class="ref" href="nfcont_1.html#D11" target="_self" title="NFCONT_1:def.11">NFCONT_1:def 11</a><br/>

<b>let </b><font color="Maroon" title="c5">r</font> be   <a href="pre_topc.html#NM2" title="PRE_TOPC:NM.2">Point</a> of <font color="Maroon" title="c2">S</font>;<br/>

<b>assume </b><a NAME="E2:54_2"/>
<font color="Maroon" title="c5">r</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c4">Y</font>
 ;<br/>

<a NAME="E3:54_2"/><b>then </b>
<font color="Maroon" title="c3">f</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <font color="Maroon" title="c4">Y</font> <a href="nfcont_1.html#R1" title="NFCONT_1:pred.1">is_continuous_in</a> <font color="Maroon" title="c5">r</font>
 
<b>by </b><i><a class="txt" href="nfcont_1.html#E4:54"><i><font color="Green" title="E45">A4</font></i></a>, <a class="ref" href="nfcont_1.html#D11" target="_self" title="NFCONT_1:def.11">Def11</a></i>;<br/>
<b>hence </b><a NAME="E4:54_2"/>
<span class="p1">(<span class="default"><font color="Maroon" title="c3">f</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <font color="Maroon" title="c4">Y</font></span>)</span> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <font color="Maroon" title="c4">Y</font> <a href="nfcont_1.html#R1" title="NFCONT_1:pred.1">is_continuous_in</a> <font color="Maroon" title="c5">r</font>
 <b>by </b><i><a class="ref" href="relat_1.html#T101" title="RELAT_1:th.101">RELAT_1:101</a></i>;<br/>


</div><b>end;</b></div>
<b>then consider </b><font color="Maroon" title="c5">x1</font>, <font color="Maroon" title="c6">x2</font> being   <a href="pre_topc.html#NM2" title="PRE_TOPC:NM.2">Point</a> of <font color="Maroon" title="c2">S</font><b> such that </b><br/><a NAME="E8:54"/><i><font color="Green" title="E47">A6</font></i>: 
( <font color="Maroon" title="c5">x1</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="relset_1.html#K4" title="RELSET_1:func.4">dom</a> <span class="p1">(<span class="default"><font color="Maroon" title="c3">f</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <font color="Maroon" title="c4">Y</font></span>)</span> &amp; <font color="Maroon" title="c6">x2</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="relset_1.html#K4" title="RELSET_1:func.4">dom</a> <span class="p1">(<span class="default"><font color="Maroon" title="c3">f</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <font color="Maroon" title="c4">Y</font></span>)</span> &amp; <span class="p1"><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">||.</a><span class="default"><span class="p2">(<span class="default"><font color="Maroon" title="c3">f</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <font color="Maroon" title="c4">Y</font></span>)</span></span><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">.||</a></span> <a href="partfun1.html#K7" title="PARTFUN1:func.7">/.</a> <font color="Maroon" title="c5">x1</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="seq_4.html#K4" title="SEQ_4:func.4">upper_bound</a> <span class="p1">(<span class="default"><a href="relset_1.html#K5" title="RELSET_1:func.5">rng</a> <span class="p2"><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">||.</a><span class="default"><span class="p3">(<span class="default"><font color="Maroon" title="c3">f</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <font color="Maroon" title="c4">Y</font></span>)</span></span><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">.||</a></span></span>)</span> &amp; <span class="p1"><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">||.</a><span class="default"><span class="p2">(<span class="default"><font color="Maroon" title="c3">f</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <font color="Maroon" title="c4">Y</font></span>)</span></span><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">.||</a></span> <a href="partfun1.html#K7" title="PARTFUN1:func.7">/.</a> <font color="Maroon" title="c6">x2</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="seq_4.html#K5" title="SEQ_4:func.5">lower_bound</a> <span class="p1">(<span class="default"><a href="relset_1.html#K5" title="RELSET_1:func.5">rng</a> <span class="p2"><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">||.</a><span class="default"><span class="p3">(<span class="default"><font color="Maroon" title="c3">f</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <font color="Maroon" title="c4">Y</font></span>)</span></span><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">.||</a></span></span>)</span> )
 <b>by </b><i><a class="txt" href="nfcont_1.html#E1:54"><i><font color="Green" title="E42">A1</font></i></a>, <a class="txt" href="nfcont_1.html#E3:54"><i><font color="Green" title="E44">A3</font></i></a>, <a class="txt" href="nfcont_1.html#E5:54"><i><font color="Green" title="E46">A5</font></i></a>, <a class="ref" href="nfcont_1.html#T41" target="_self" title="NFCONT_1:th.41">Th41</a></i>;<br/>
<a NAME="E9:54"/><i><font color="Green" title="E48">A7</font></i>: 
 <a href="relset_1.html#K4" title="RELSET_1:func.4">dom</a> <font color="Maroon" title="c3">f</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="relset_1.html#K4" title="RELSET_1:func.4">dom</a> <span class="p1"><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">||.</a><span class="default"><font color="Maroon" title="c3">f</font></span><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">.||</a></span>
 
<b>by </b><i><a class="ref" href="nfcont_1.html#D2" target="_self" title="NFCONT_1:def.2">Def2</a></i>;<br/>
<b>take </b>
<font color="Maroon" title="c5">x1</font>
;<br/>

<b>take </b>
<font color="Maroon" title="c6">x2</font>
;<br/>

<b>thus </b><a NAME="E10:54"/>
( <font color="Maroon" title="c5">x1</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c4">Y</font> &amp; <font color="Maroon" title="c6">x2</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> <font color="Maroon" title="c4">Y</font> )
 <b>by </b><i><a class="txt" href="nfcont_1.html#E5:54"><i><font color="Green" title="E46">A5</font></i></a>, <a class="txt" href="nfcont_1.html#E8:54"><i><font color="Green" title="E47">A6</font></i></a></i>;<br/>

<a NAME="E11:54"/><i><font color="Green" title="E49">A8</font></i>: 
( <font color="Maroon" title="c5">x1</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="relset_1.html#K4" title="RELSET_1:func.4">dom</a> <span class="p1"><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">||.</a><span class="default"><span class="p2">(<span class="default"><font color="Maroon" title="c3">f</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <font color="Maroon" title="c4">Y</font></span>)</span></span><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">.||</a></span> &amp; <font color="Maroon" title="c6">x2</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a>  <a href="relset_1.html#K4" title="RELSET_1:func.4">dom</a> <span class="p1"><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">||.</a><span class="default"><span class="p2">(<span class="default"><font color="Maroon" title="c3">f</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <font color="Maroon" title="c4">Y</font></span>)</span></span><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">.||</a></span> )
 
<b>by </b><i><a class="txt" href="nfcont_1.html#E8:54"><i><font color="Green" title="E47">A6</font></i></a>, <a class="ref" href="nfcont_1.html#D2" target="_self" title="NFCONT_1:def.2">Def2</a></i>;<br/>
<b>then </b><i><font color="Green" title="E50">A9</font></i>: <span class="p1"><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">||.</a><span class="default"><span class="p2">(<span class="default"><font color="Maroon" title="c3">f</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <font color="Maroon" title="c4">Y</font></span>)</span></span><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">.||</a></span> <a href="partfun1.html#K7" title="PARTFUN1:func.7">/.</a> <font color="Maroon" title="c5">x1</font> = 
<span class="p1"><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">||.</a><span class="default"><span class="p2">(<span class="default"><font color="Maroon" title="c3">f</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <font color="Maroon" title="c4">Y</font></span>)</span></span><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">.||</a></span> <a href="seq_1.html#K1" title="SEQ_1:func.1">.</a> <font color="Maroon" title="c5">x1</font>
<b>by </b><i><a class="ref" href="partfun1.html#D8" title="PARTFUN1:def.8">PARTFUN1:def 8</a></i>
<br/>.= 
<span class="p1"><a href="normsp_1.html#K1" title="NORMSP_1:func.1">||.</a><span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><font color="Maroon" title="c3">f</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <font color="Maroon" title="c4">Y</font></span>)</span> <a href="partfun1.html#K7" title="PARTFUN1:func.7">/.</a> <font color="Maroon" title="c5">x1</font></span>)</span></span><a href="normsp_1.html#K1" title="NORMSP_1:func.1">.||</a></span>
<b>by </b><i><a class="txt" href="nfcont_1.html#E11:54"><i><font color="Green" title="E49">A8</font></i></a>, <a class="ref" href="nfcont_1.html#D2" target="_self" title="NFCONT_1:def.2">Def2</a></i>
<br/>.= 
<span class="p1"><a href="normsp_1.html#K1" title="NORMSP_1:func.1">||.</a><span class="default"><span class="p2">(<span class="default"><font color="Maroon" title="c3">f</font> <a href="partfun1.html#K7" title="PARTFUN1:func.7">/.</a> <font color="Maroon" title="c5">x1</font></span>)</span></span><a href="normsp_1.html#K1" title="NORMSP_1:func.1">.||</a></span>
<b>by </b><i><a class="txt" href="nfcont_1.html#E8:54"><i><font color="Green" title="E47">A6</font></i></a>, <a class="ref" href="partfun2.html#T32" title="PARTFUN2:th.32">PARTFUN2:32</a></i>
<br/>.= 
<span class="p1"><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">||.</a><span class="default"><font color="Maroon" title="c3">f</font></span><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">.||</a></span> <a href="seq_1.html#K1" title="SEQ_1:func.1">.</a> <font color="Maroon" title="c5">x1</font>
<b>by </b><i><a class="txt" href="nfcont_1.html#E2:54"><i><font color="Green" title="E43">A2</font></i></a>, <a class="txt" href="nfcont_1.html#E5:54"><i><font color="Green" title="E46">A5</font></i></a>, <a class="txt" href="nfcont_1.html#E8:54"><i><font color="Green" title="E47">A6</font></i></a>, <a class="txt" href="nfcont_1.html#E9:54"><i><font color="Green" title="E48">A7</font></i></a>, <a class="ref" href="nfcont_1.html#D2" target="_self" title="NFCONT_1:def.2">Def2</a></i>
<br/>.= 
<span class="p1"><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">||.</a><span class="default"><font color="Maroon" title="c3">f</font></span><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">.||</a></span> <a href="partfun1.html#K7" title="PARTFUN1:func.7">/.</a> <font color="Maroon" title="c5">x1</font>
<b>by </b><i><a class="txt" href="nfcont_1.html#E2:54"><i><font color="Green" title="E43">A2</font></i></a>, <a class="txt" href="nfcont_1.html#E5:54"><i><font color="Green" title="E46">A5</font></i></a>, <a class="txt" href="nfcont_1.html#E8:54"><i><font color="Green" title="E47">A6</font></i></a>, <a class="txt" href="nfcont_1.html#E9:54"><i><font color="Green" title="E48">A7</font></i></a>, <a class="ref" href="partfun1.html#D8" title="PARTFUN1:def.8">PARTFUN1:def 8</a></i>
;<br/>
<i><font color="Green" title="E51">A10</font></i>: <span class="p1"><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">||.</a><span class="default"><span class="p2">(<span class="default"><font color="Maroon" title="c3">f</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <font color="Maroon" title="c4">Y</font></span>)</span></span><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">.||</a></span> <a href="partfun1.html#K7" title="PARTFUN1:func.7">/.</a> <font color="Maroon" title="c6">x2</font> = 
<span class="p1"><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">||.</a><span class="default"><span class="p2">(<span class="default"><font color="Maroon" title="c3">f</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <font color="Maroon" title="c4">Y</font></span>)</span></span><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">.||</a></span> <a href="seq_1.html#K1" title="SEQ_1:func.1">.</a> <font color="Maroon" title="c6">x2</font>
<b>by </b><i><a class="txt" href="nfcont_1.html#E11:54"><i><font color="Green" title="E49">A8</font></i></a>, <a class="ref" href="partfun1.html#D8" title="PARTFUN1:def.8">PARTFUN1:def 8</a></i>
<br/>.= 
<span class="p1"><a href="normsp_1.html#K1" title="NORMSP_1:func.1">||.</a><span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><font color="Maroon" title="c3">f</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <font color="Maroon" title="c4">Y</font></span>)</span> <a href="partfun1.html#K7" title="PARTFUN1:func.7">/.</a> <font color="Maroon" title="c6">x2</font></span>)</span></span><a href="normsp_1.html#K1" title="NORMSP_1:func.1">.||</a></span>
<b>by </b><i><a class="txt" href="nfcont_1.html#E11:54"><i><font color="Green" title="E49">A8</font></i></a>, <a class="ref" href="nfcont_1.html#D2" target="_self" title="NFCONT_1:def.2">Def2</a></i>
<br/>.= 
<span class="p1"><a href="normsp_1.html#K1" title="NORMSP_1:func.1">||.</a><span class="default"><span class="p2">(<span class="default"><font color="Maroon" title="c3">f</font> <a href="partfun1.html#K7" title="PARTFUN1:func.7">/.</a> <font color="Maroon" title="c6">x2</font></span>)</span></span><a href="normsp_1.html#K1" title="NORMSP_1:func.1">.||</a></span>
<b>by </b><i><a class="txt" href="nfcont_1.html#E8:54"><i><font color="Green" title="E47">A6</font></i></a>, <a class="ref" href="partfun2.html#T32" title="PARTFUN2:th.32">PARTFUN2:32</a></i>
<br/>.= 
<span class="p1"><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">||.</a><span class="default"><font color="Maroon" title="c3">f</font></span><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">.||</a></span> <a href="seq_1.html#K1" title="SEQ_1:func.1">.</a> <font color="Maroon" title="c6">x2</font>
<b>by </b><i><a class="txt" href="nfcont_1.html#E2:54"><i><font color="Green" title="E43">A2</font></i></a>, <a class="txt" href="nfcont_1.html#E5:54"><i><font color="Green" title="E46">A5</font></i></a>, <a class="txt" href="nfcont_1.html#E8:54"><i><font color="Green" title="E47">A6</font></i></a>, <a class="txt" href="nfcont_1.html#E9:54"><i><font color="Green" title="E48">A7</font></i></a>, <a class="ref" href="nfcont_1.html#D2" target="_self" title="NFCONT_1:def.2">Def2</a></i>
<br/>.= 
<span class="p1"><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">||.</a><span class="default"><font color="Maroon" title="c3">f</font></span><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">.||</a></span> <a href="partfun1.html#K7" title="PARTFUN1:func.7">/.</a> <font color="Maroon" title="c6">x2</font>
<b>by </b><i><a class="txt" href="nfcont_1.html#E2:54"><i><font color="Green" title="E43">A2</font></i></a>, <a class="txt" href="nfcont_1.html#E5:54"><i><font color="Green" title="E46">A5</font></i></a>, <a class="txt" href="nfcont_1.html#E8:54"><i><font color="Green" title="E47">A6</font></i></a>, <a class="txt" href="nfcont_1.html#E9:54"><i><font color="Green" title="E48">A7</font></i></a>, <a class="ref" href="partfun1.html#D8" title="PARTFUN1:def.8">PARTFUN1:def 8</a></i>
;<br/>
<span class="p1"><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">||.</a><span class="default"><font color="Maroon" title="c3">f</font></span><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">.||</a></span> <a href="relset_1.html#K10" title="RELSET_1:func.10">.:</a> <font color="Maroon" title="c4">Y</font> = 
 <a href="relset_1.html#K5" title="RELSET_1:func.5">rng</a> <span class="p1">(<span class="default"><span class="p2"><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">||.</a><span class="default"><font color="Maroon" title="c3">f</font></span><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">.||</a></span> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <font color="Maroon" title="c4">Y</font></span>)</span>
<b>by </b><i><a class="ref" href="relat_1.html#T148" title="RELAT_1:th.148">RELAT_1:148</a></i>
<br/>.= 
 <a href="relset_1.html#K5" title="RELSET_1:func.5">rng</a> <span class="p1"><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">||.</a><span class="default"><span class="p2">(<span class="default"><font color="Maroon" title="c3">f</font> <a href="partfun1.html#K2" title="PARTFUN1:func.2">|</a> <font color="Maroon" title="c4">Y</font></span>)</span></span><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">.||</a></span>
<b>by </b><i><a class="ref" href="nfcont_1.html#T42" target="_self" title="NFCONT_1:th.42">Th42</a></i>
;<br/>
<b>hence </b><a NAME="E15:54"/>
( <span class="p1"><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">||.</a><span class="default"><font color="Maroon" title="c3">f</font></span><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">.||</a></span> <a href="partfun1.html#K7" title="PARTFUN1:func.7">/.</a> <font color="Maroon" title="c5">x1</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="seq_4.html#K4" title="SEQ_4:func.4">upper_bound</a> <span class="p1">(<span class="default"><span class="p2"><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">||.</a><span class="default"><font color="Maroon" title="c3">f</font></span><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">.||</a></span> <a href="relset_1.html#K10" title="RELSET_1:func.10">.:</a> <font color="Maroon" title="c4">Y</font></span>)</span> &amp; <span class="p1"><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">||.</a><span class="default"><font color="Maroon" title="c3">f</font></span><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">.||</a></span> <a href="partfun1.html#K7" title="PARTFUN1:func.7">/.</a> <font color="Maroon" title="c6">x2</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="seq_4.html#K5" title="SEQ_4:func.5">lower_bound</a> <span class="p1">(<span class="default"><span class="p2"><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">||.</a><span class="default"><font color="Maroon" title="c3">f</font></span><a href="nfcont_1.html#K1" title="NFCONT_1:func.1">.||</a></span> <a href="relset_1.html#K10" title="RELSET_1:func.10">.:</a> <font color="Maroon" title="c4">Y</font></span>)</span> )
 <b>by </b><i><a class="txt" href="nfcont_1.html#E8:54"><i><font color="Green" title="E47">A6</font></i></a>, <a class="txt" href="nfcont_1.html#E12:54"><i><font color="Green" title="E50">A9</font></i></a>, <a class="txt" href="nfcont_1.html#E13:54"><i><font color="Green" title="E51">A10</font></i></a></i>;<br/>


</div>
