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<b>let </b><font color="Maroon" title="c1">fp</font> be    <a href="trees_4.html#M1" title="TREES_4:mode.1">FinSequence</a> of  <a href="numbers.html#K5" title="NUMBERS:func.5">NAT</a> ;<br/><b>let </b><font color="Maroon" title="c2">a</font>, <font color="Maroon" title="c3">b</font> be    <a href="subset_1.html#M2" title="SUBSET_1:mode.2">Element</a> of  <a href="numbers.html#K5" title="NUMBERS:func.5">NAT</a> ;<br/>





<b>assume </b><a NAME="E1:50"/><i><font color="Green" title="E35">A1</font></i>: 
( <font color="Maroon" title="c2">a</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> <font color="Maroon" title="c1">fp</font> &amp; <font color="Maroon" title="c3">b</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> <font color="Maroon" title="c1">fp</font> &amp; <font color="Maroon" title="c2">a</font> <a href="hidden.html#NR2" title="HIDDEN:NR.2">&lt;&gt;</a> <font color="Maroon" title="c3">b</font> &amp;  <a href="finseq_1.html#K3" title="FINSEQ_1:func.3">len</a> <font color="Maroon" title="c1">fp</font> <a href="xxreal_0.html#NR2" title="XXREAL_0:NR.2">&gt;=</a> 1 )
 ;<br/>

<b>then consider </b><font color="Maroon" title="c4">n</font> being   <a href="nat_1.html#NM1" title="NAT_1:NM.1">Nat</a><b> such that </b><br/><a NAME="E3:50"/><i><font color="Green" title="E36">A2</font></i>: 
 <a href="finseq_1.html#K3" title="FINSEQ_1:func.3">len</a> <font color="Maroon" title="c1">fp</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c4">n</font> <a href="xcmplx_0.html#K2" title="XCMPLX_0:func.2">+</a> 1
 <b>by </b><i><a class="ref" href="nat_1.html#T6" title="NAT_1:th.6">NAT_1:6</a></i>;<br/>
<a NAME="E4:50"/><i><font color="Green" title="E37">A3</font></i>: 
( <font color="Maroon" title="c2">a</font> <a href="xxreal_0.html#NR2" title="XXREAL_0:NR.2">&gt;=</a> 1 &amp; <font color="Maroon" title="c2">a</font> <a href="xxreal_0.html#R1" title="XXREAL_0:pred.1">&lt;=</a> <font color="Maroon" title="c4">n</font> <a href="xcmplx_0.html#K2" title="XCMPLX_0:func.2">+</a> 1 &amp; <font color="Maroon" title="c3">b</font> <a href="xxreal_0.html#NR2" title="XXREAL_0:NR.2">&gt;=</a> 1 &amp; <font color="Maroon" title="c3">b</font> <a href="xxreal_0.html#R1" title="XXREAL_0:pred.1">&lt;=</a> <font color="Maroon" title="c4">n</font> <a href="xcmplx_0.html#K2" title="XCMPLX_0:func.2">+</a> 1 )
 
<b>by </b><i><a class="txt" href="int_4.html#E1:50"><i><font color="Green" title="E35">A1</font></i></a>, <a class="txt" href="int_4.html#E3:50"><i><font color="Green" title="E36">A2</font></i></a>, <a class="ref" href="finseq_3.html#T27" title="FINSEQ_3:th.27">FINSEQ_3:27</a></i>;<br/>
<a NAME="E5:50"/><i><font color="Green" title="E38">A5</font></i>: 
<span class="p1">(<span class="default"><a href="finseq_1.html#K3" title="FINSEQ_1:func.3">len</a> <span class="p2">(<span class="default"><a href="wsierp_1.html#K8" title="WSIERP_1:func.8">Del</a> <font color="Maroon" title="c1">fp</font>,<font color="Maroon" title="c2">a</font></span>)</span></span>)</span> <a href="nat_1.html#K1" title="NAT_1:func.1">+</a> 1 <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c4">n</font> <a href="xcmplx_0.html#K2" title="XCMPLX_0:func.2">+</a> 1
 
<b>by </b><i><a class="txt" href="int_4.html#E1:50"><i><font color="Green" title="E35">A1</font></i></a>, <a class="txt" href="int_4.html#E3:50"><i><font color="Green" title="E36">A2</font></i></a>, <a class="ref" href="wsierp_1.html#D1" title="WSIERP_1:def.1">WSIERP_1:def 1</a></i>;<br/>
<div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="50_1"><b>per </b></a><a class="txt" onclick="hs(this)" href="javascript:()"><b>cases </b></a><span class="hide"><a NAME="E1:50_1"/>
( <font color="Maroon" title="c2">a</font> <a href="xxreal_0.html#R1" title="XXREAL_0:pred.1">&lt;=</a> <font color="Maroon" title="c4">n</font> or <font color="Maroon" title="c2">a</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c4">n</font> <a href="xcmplx_0.html#K2" title="XCMPLX_0:func.2">+</a> 1 )
 </span><b>by </b><i><a class="txt" href="int_4.html#E4:50"><i><font color="Green" title="E37">A3</font></i></a>, <a class="ref" href="nat_1.html#T8" title="NAT_1:th.8">NAT_1:8</a></i>;<br/><div class="add"><div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="50_1_1"><b>suppose </b></a><a NAME="E1:50_1_1"/><i><font color="Green" title="E39">A4</font></i>: 
<font color="Maroon" title="c2">a</font> <a href="xxreal_0.html#R1" title="XXREAL_0:pred.1">&lt;=</a> <font color="Maroon" title="c4">n</font>
 ;<br/><div class="add"><div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="50_1_1_1"><b>per </b></a><a class="txt" onclick="hs(this)" href="javascript:()"><b>cases </b></a><span class="hide"><a NAME="E1:50_1_1_1"/>
( <font color="Maroon" title="c3">b</font> <a href="xxreal_0.html#R1" title="XXREAL_0:pred.1">&lt;</a> <font color="Maroon" title="c2">a</font> or <font color="Maroon" title="c2">a</font> <a href="xxreal_0.html#R1" title="XXREAL_0:pred.1">&lt;</a> <font color="Maroon" title="c3">b</font> )
 </span><b>by </b><i><a class="txt" href="int_4.html#E1:50"><i><font color="Green" title="E35">A1</font></i></a>, <a class="ref" href="real_1.html#D5" title="REAL_1:def.5">REAL_1:def 5</a></i>;<br/><div class="add"><div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="50_1_1_1_1"><b>suppose </b></a><a NAME="E1:50_1_1_1_1"/><i><font color="Green" title="E40">A7</font></i>: 
<font color="Maroon" title="c3">b</font> <a href="xxreal_0.html#R1" title="XXREAL_0:pred.1">&lt;</a> <font color="Maroon" title="c2">a</font>
 ;<br/><div class="add"><a NAME="E2:50_1_1_1_1"/><b>then </b><i><font color="Green" title="E41">A8</font></i>: 
<span class="p1">(<span class="default"><a href="wsierp_1.html#K8" title="WSIERP_1:func.8">Del</a> <font color="Maroon" title="c1">fp</font>,<font color="Maroon" title="c2">a</font></span>)</span> <a href="wsierp_1.html#K2" title="WSIERP_1:func.2">.</a> <font color="Maroon" title="c3">b</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c1">fp</font> <a href="wsierp_1.html#K2" title="WSIERP_1:func.2">.</a> <font color="Maroon" title="c3">b</font>
 <b>by </b><i><a class="txt" href="int_4.html#E1:50"><i><font color="Green" title="E35">A1</font></i></a>, <a class="ref" href="wsierp_1.html#D1" title="WSIERP_1:def.1">WSIERP_1:def 1</a></i>;<br/><a NAME="E3:50_1_1_1_1"/>
<font color="Maroon" title="c3">b</font> <a href="xxreal_0.html#R1" title="XXREAL_0:pred.1">&lt;=</a> <font color="Maroon" title="c4">n</font>
 <b>by </b><i><a class="txt" href="int_4.html#E1:50_1_1"><i><font color="Green" title="E39">A4</font></i></a>, <a class="txt" href="int_4.html#E1:50_1_1_1_1"><i><font color="Green" title="E40">A7</font></i></a>, <a class="ref" href="xxreal_0.html#T2" title="XXREAL_0:th.2">XXREAL_0:2</a></i>;<br/><a NAME="E4:50_1_1_1_1"/><b>then </b>
<font color="Maroon" title="c3">b</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"><a href="wsierp_1.html#K8" title="WSIERP_1:func.8">Del</a> <font color="Maroon" title="c1">fp</font>,<font color="Maroon" title="c2">a</font></span>)</span>
 <b>by </b><i><a class="txt" href="int_4.html#E4:50"><i><font color="Green" title="E37">A3</font></i></a>, <a class="txt" href="int_4.html#E5:50"><i><font color="Green" title="E38">A5</font></i></a>, <a class="ref" href="finseq_3.html#T27" title="FINSEQ_3:th.27">FINSEQ_3:27</a></i>;<br/><b>hence </b><a NAME="E5:50_1_1_1_1"/>
<font color="Maroon" title="c1">fp</font> <a href="wsierp_1.html#K2" title="WSIERP_1:func.2">.</a> <font color="Maroon" title="c3">b</font> <a href="nat_d.html#R1" title="NAT_D:pred.1">divides</a>  <a href="wsierp_1.html#K6" title="WSIERP_1:func.6">Product</a> <span class="p1">(<span class="default"><a href="wsierp_1.html#K8" title="WSIERP_1:func.8">Del</a> <font color="Maroon" title="c1">fp</font>,<font color="Maroon" title="c2">a</font></span>)</span>
 <b>by </b><i><a class="ref" href="int_4.html#T32" target="_self" title="INT_4:th.32">Th29</a>, <a class="txt" href="int_4.html#E2:50_1_1_1_1"><i><font color="Green" title="E41">A8</font></i></a></i>;<br/></div><b>end;</b></div><div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="50_1_1_1_2"><b>suppose </b></a><a NAME="E1:50_1_1_1_2"/><i><font color="Green" title="E40">A9</font></i>: 
<font color="Maroon" title="c2">a</font> <a href="xxreal_0.html#R1" title="XXREAL_0:pred.1">&lt;</a> <font color="Maroon" title="c3">b</font>
 ;<br/><div class="add"><a NAME="E2:50_1_1_1_2"/><b>then </b>
<font color="Maroon" title="c3">b</font> <a href="xxreal_0.html#NR4" title="XXREAL_0:NR.4">&gt;</a> 1
 <b>by </b><i><a class="txt" href="int_4.html#E4:50"><i><font color="Green" title="E37">A3</font></i></a>, <a class="ref" href="xxreal_0.html#T2" title="XXREAL_0:th.2">XXREAL_0:2</a></i>;<br/><a NAME="E3:50_1_1_1_2"/><b>then </b>
<font color="Maroon" title="c3">b</font> <a href="real_1.html#K5" title="REAL_1:func.5">-</a> 1 <a href="xxreal_0.html#NR4" title="XXREAL_0:NR.4">&gt;</a> 0
 <b>by </b><i><a class="ref" href="xreal_1.html#T52" title="XREAL_1:th.52">XREAL_1:52</a></i>;<br/><a NAME="E4:50_1_1_1_2"/><b>then </b>
<font color="Maroon" title="c3">b</font> <a href="binarith.html#K3" title="BINARITH:func.3">-'</a> 1 <a href="xxreal_0.html#NR4" title="XXREAL_0:NR.4">&gt;</a> 0
 <b>by </b><i><a class="txt" href="int_4.html#E4:50"><i><font color="Green" title="E37">A3</font></i></a>, <a class="ref" href="binarith.html#T50" title="BINARITH:th.50">BINARITH:50</a></i>;<br/><a NAME="E5:50_1_1_1_2"/><b>then </b><i><font color="Green" title="E41">A11</font></i>: 
<font color="Maroon" title="c3">b</font> <a href="binarith.html#K3" title="BINARITH:func.3">-'</a> 1 <a href="xxreal_0.html#NR2" title="XXREAL_0:NR.2">&gt;=</a> 1
 <b>by </b><i><a class="txt" href="int_4.html#E13"><i><font color="Green" title="E13">Lm4</font></i></a></i>;<br/><a NAME="E6:50_1_1_1_2"/>
<font color="Maroon" title="c3">b</font> <a href="real_1.html#K5" title="REAL_1:func.5">-</a> 1 <a href="xxreal_0.html#R1" title="XXREAL_0:pred.1">&lt;=</a> <span class="p1">(<span class="default"><font color="Maroon" title="c4">n</font> <a href="xcmplx_0.html#K2" title="XCMPLX_0:func.2">+</a> 1</span>)</span> <a href="xcmplx_0.html#K6" title="XCMPLX_0:func.6">-</a> 1
 <b>by </b><i><a class="txt" href="int_4.html#E4:50"><i><font color="Green" title="E37">A3</font></i></a>, <a class="ref" href="xreal_1.html#T11" title="XREAL_1:th.11">XREAL_1:11</a></i>;<br/><a NAME="E7:50_1_1_1_2"/><b>then </b>
<font color="Maroon" title="c3">b</font> <a href="binarith.html#K3" title="BINARITH:func.3">-'</a> 1 <a href="xxreal_0.html#R1" title="XXREAL_0:pred.1">&lt;=</a> <font color="Maroon" title="c4">n</font>
 <b>by </b><i><a class="txt" href="int_4.html#E4:50"><i><font color="Green" title="E37">A3</font></i></a>, <a class="ref" href="binarith.html#T50" title="BINARITH:th.50">BINARITH:50</a></i>;<br/><a NAME="E8:50_1_1_1_2"/><b>then </b>
<font color="Maroon" title="c3">b</font> <a href="binarith.html#K3" title="BINARITH:func.3">-'</a> 1 <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"><a href="wsierp_1.html#K8" title="WSIERP_1:func.8">Del</a> <font color="Maroon" title="c1">fp</font>,<font color="Maroon" title="c2">a</font></span>)</span>
 <b>by </b><i><a class="txt" href="int_4.html#E5:50_1_1_1_2"><i><font color="Green" title="E41">A11</font></i></a>, <a class="txt" href="int_4.html#E5:50"><i><font color="Green" title="E38">A5</font></i></a>, <a class="ref" href="finseq_3.html#T27" title="FINSEQ_3:th.27">FINSEQ_3:27</a></i>;<br/><a NAME="E9:50_1_1_1_2"/><b>then </b><i><font color="Green" title="E42">A12</font></i>: 
<span class="p1">(<span class="default"><a href="wsierp_1.html#K8" title="WSIERP_1:func.8">Del</a> <font color="Maroon" title="c1">fp</font>,<font color="Maroon" title="c2">a</font></span>)</span> <a href="wsierp_1.html#K2" title="WSIERP_1:func.2">.</a> <span class="p1">(<span class="default"><font color="Maroon" title="c3">b</font> <a href="binarith.html#K3" title="BINARITH:func.3">-'</a> 1</span>)</span> <a href="nat_d.html#R1" title="NAT_D:pred.1">divides</a>  <a href="wsierp_1.html#K6" title="WSIERP_1:func.6">Product</a> <span class="p1">(<span class="default"><a href="wsierp_1.html#K8" title="WSIERP_1:func.8">Del</a> <font color="Maroon" title="c1">fp</font>,<font color="Maroon" title="c2">a</font></span>)</span>
 <b>by </b><i><a class="ref" href="int_4.html#T32" target="_self" title="INT_4:th.32">Th29</a></i>;<br/><a NAME="E10:50_1_1_1_2"/>
<font color="Maroon" title="c3">b</font> <a href="xxreal_0.html#NR2" title="XXREAL_0:NR.2">&gt;=</a> <font color="Maroon" title="c2">a</font> <a href="real_1.html#K3" title="REAL_1:func.3">+</a> 1
 <b>by </b><i><a class="txt" href="int_4.html#E1:50_1_1_1_2"><i><font color="Green" title="E40">A9</font></i></a>, <a class="ref" href="nat_1.html#T13" title="NAT_1:th.13">NAT_1:13</a></i>;<br/><a NAME="E11:50_1_1_1_2"/><b>then </b>
<font color="Maroon" title="c3">b</font> <a href="real_1.html#K5" title="REAL_1:func.5">-</a> 1 <a href="xxreal_0.html#NR2" title="XXREAL_0:NR.2">&gt;=</a> <font color="Maroon" title="c2">a</font>
 <b>by </b><i><a class="ref" href="xreal_1.html#T21" title="XREAL_1:th.21">XREAL_1:21</a></i>;<br/><a NAME="E12:50_1_1_1_2"/><b>then </b>
<font color="Maroon" title="c3">b</font> <a href="binarith.html#K3" title="BINARITH:func.3">-'</a> 1 <a href="xxreal_0.html#NR2" title="XXREAL_0:NR.2">&gt;=</a> <font color="Maroon" title="c2">a</font>
 <b>by </b><i><a class="txt" href="int_4.html#E4:50"><i><font color="Green" title="E37">A3</font></i></a>, <a class="ref" href="binarith.html#T50" title="BINARITH:th.50">BINARITH:50</a></i>;<br/><a NAME="E13:50_1_1_1_2"/><b>then </b>
<span class="p1">(<span class="default"><a href="wsierp_1.html#K8" title="WSIERP_1:func.8">Del</a> <font color="Maroon" title="c1">fp</font>,<font color="Maroon" title="c2">a</font></span>)</span> <a href="wsierp_1.html#K2" title="WSIERP_1:func.2">.</a> <span class="p1">(<span class="default"><font color="Maroon" title="c3">b</font> <a href="binarith.html#K3" title="BINARITH:func.3">-'</a> 1</span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c1">fp</font> <a href="polynom1.html#K8" title="POLYNOM1:func.8">.</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon" title="c3">b</font> <a href="binarith.html#K3" title="BINARITH:func.3">-'</a> 1</span>)</span> <a href="real_1.html#K3" title="REAL_1:func.3">+</a> 1</span>)</span>
 <b>by </b><i><a class="txt" href="int_4.html#E1:50"><i><font color="Green" title="E35">A1</font></i></a>, <a class="ref" href="wsierp_1.html#D1" title="WSIERP_1:def.1">WSIERP_1:def 1</a></i>;<br/><b>hence </b><a NAME="E14:50_1_1_1_2"/>
<font color="Maroon" title="c1">fp</font> <a href="wsierp_1.html#K2" title="WSIERP_1:func.2">.</a> <font color="Maroon" title="c3">b</font> <a href="nat_d.html#R1" title="NAT_D:pred.1">divides</a>  <a href="wsierp_1.html#K6" title="WSIERP_1:func.6">Product</a> <span class="p1">(<span class="default"><a href="wsierp_1.html#K8" title="WSIERP_1:func.8">Del</a> <font color="Maroon" title="c1">fp</font>,<font color="Maroon" title="c2">a</font></span>)</span>
 <b>by </b><i><a class="txt" href="int_4.html#E9:50_1_1_1_2"><i><font color="Green" title="E42">A12</font></i></a>, <a class="txt" href="int_4.html#E4:50"><i><font color="Green" title="E37">A3</font></i></a>, <a class="ref" href="binarith.html#T53" title="BINARITH:th.53">BINARITH:53</a></i>;<br/></div><b>end;</b></div></div><b>end;</b></div></div><b>end;</b></div><div><a class="txt" onclick="hsNdiv(this)" href="javascript:()" title="50_1_2"><b>suppose </b></a><a NAME="E1:50_1_2"/><i><font color="Green" title="E39">A13</font></i>: 
<font color="Maroon" title="c2">a</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c4">n</font> <a href="xcmplx_0.html#K2" title="XCMPLX_0:func.2">+</a> 1
 ;<br/><div class="add"><a NAME="E2:50_1_2"/><b>then </b>
<font color="Maroon" title="c3">b</font> <a href="xxreal_0.html#R1" title="XXREAL_0:pred.1">&lt;</a> <font color="Maroon" title="c2">a</font>
 <b>by </b><i><a class="txt" href="int_4.html#E1:50"><i><font color="Green" title="E35">A1</font></i></a>, <a class="txt" href="int_4.html#E4:50"><i><font color="Green" title="E37">A3</font></i></a>, <a class="ref" href="real_1.html#D5" title="REAL_1:def.5">REAL_1:def 5</a></i>;<br/><a NAME="E3:50_1_2"/><b>then </b><i><font color="Green" title="E40">A15</font></i>: 
<span class="p1">(<span class="default"><a href="wsierp_1.html#K8" title="WSIERP_1:func.8">Del</a> <font color="Maroon" title="c1">fp</font>,<font color="Maroon" title="c2">a</font></span>)</span> <a href="wsierp_1.html#K2" title="WSIERP_1:func.2">.</a> <font color="Maroon" title="c3">b</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c1">fp</font> <a href="wsierp_1.html#K2" title="WSIERP_1:func.2">.</a> <font color="Maroon" title="c3">b</font>
 <b>by </b><i><a class="txt" href="int_4.html#E1:50"><i><font color="Green" title="E35">A1</font></i></a>, <a class="ref" href="wsierp_1.html#D1" title="WSIERP_1:def.1">WSIERP_1:def 1</a></i>;<br/><a NAME="E4:50_1_2"/>
<font color="Maroon" title="c3">b</font> <a href="xxreal_0.html#R1" title="XXREAL_0:pred.1">&lt;</a> <font color="Maroon" title="c4">n</font> <a href="xcmplx_0.html#K2" title="XCMPLX_0:func.2">+</a> 1
 <b>by </b><i><a class="txt" href="int_4.html#E1:50"><i><font color="Green" title="E35">A1</font></i></a>, <a class="txt" href="int_4.html#E4:50"><i><font color="Green" title="E37">A3</font></i></a>, <a class="txt" href="int_4.html#E1:50_1_2"><i><font color="Green" title="E39">A13</font></i></a>, <a class="ref" href="real_1.html#D5" title="REAL_1:def.5">REAL_1:def 5</a></i>;<br/><a NAME="E5:50_1_2"/><b>then </b>
<font color="Maroon" title="c3">b</font> <a href="xxreal_0.html#R1" title="XXREAL_0:pred.1">&lt;=</a> <font color="Maroon" title="c4">n</font>
 <b>by </b><i><a class="ref" href="nat_1.html#T13" title="NAT_1:th.13">NAT_1:13</a></i>;<br/><a NAME="E6:50_1_2"/><b>then </b>
<font color="Maroon" title="c3">b</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"><a href="wsierp_1.html#K8" title="WSIERP_1:func.8">Del</a> <font color="Maroon" title="c1">fp</font>,<font color="Maroon" title="c2">a</font></span>)</span>
 <b>by </b><i><a class="txt" href="int_4.html#E4:50"><i><font color="Green" title="E37">A3</font></i></a>, <a class="txt" href="int_4.html#E5:50"><i><font color="Green" title="E38">A5</font></i></a>, <a class="ref" href="finseq_3.html#T27" title="FINSEQ_3:th.27">FINSEQ_3:27</a></i>;<br/><b>hence </b><a NAME="E7:50_1_2"/>
<font color="Maroon" title="c1">fp</font> <a href="wsierp_1.html#K2" title="WSIERP_1:func.2">.</a> <font color="Maroon" title="c3">b</font> <a href="nat_d.html#R1" title="NAT_D:pred.1">divides</a>  <a href="wsierp_1.html#K6" title="WSIERP_1:func.6">Product</a> <span class="p1">(<span class="default"><a href="wsierp_1.html#K8" title="WSIERP_1:func.8">Del</a> <font color="Maroon" title="c1">fp</font>,<font color="Maroon" title="c2">a</font></span>)</span>
 <b>by </b><i><a class="ref" href="int_4.html#T32" target="_self" title="INT_4:th.32">Th29</a>, <a class="txt" href="int_4.html#E3:50_1_2"><i><font color="Green" title="E40">A15</font></i></a></i>;<br/></div><b>end;</b></div></div><b>end;</b></div>

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