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<b>let </b><font color="Maroon">IAlph</font> be  non <a href="xboole_0.html#V1">empty</a>  <a href="hidden.html#M1">set</a> ;<br/><b>let </b><font color="Maroon">fsm</font> be  non <a href="struct_0.html#V3">empty</a>  <a href="fsm_1.html#L1" target="_self">FSM</a> of <font color="Maroon">IAlph</font>;<br/><b>let </b><font color="Maroon">w</font> be    <a href="finseq_1.html#M2">FinSequence</a> of <font color="Maroon">IAlph</font>;<br/><b>let </b><font color="Maroon">q</font> be   <a href="fsm_1.html#NM1">State</a> of <font color="Maroon">fsm</font>;<br/><b>let </b><font color="Maroon">q'</font> be   <a href="fsm_1.html#NM1">State</a> of <font color="Maroon">fsm</font>;<br/>









<div><b>hereby </b>
<div class="add"><b>set </b><font color="Maroon">qs</font> = <font color="Maroon">q</font>,<font color="Maroon">w</font> <a href="fsm_1.html#K2" target="_self">-admissible</a> ;<br/><b>assume </b><a NAME="E1:25_1"/><i><font color="Green">E22</font></i>: 
<span class="p1">(<span class="default"><font color="Maroon">q</font>,<font color="Maroon">w</font> <a href="fsm_1.html#K2" target="_self">-admissible</a> </span>)</span> <a href="funct_1.html#K1">.</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <span class="p2">(<span class="default"><font color="Maroon">q</font>,<font color="Maroon">w</font> <a href="fsm_1.html#K2" target="_self">-admissible</a> </span>)</span></span>)</span> <a href="hidden.html#R1">=</a> <font color="Maroon">q'</font>
 ;<br/><a NAME="E2:25_1"/>
( <span class="p1">(<span class="default"><font color="Maroon">q</font>,<font color="Maroon">w</font> <a href="fsm_1.html#K2" target="_self">-admissible</a> </span>)</span> <a href="funct_1.html#K1">.</a> 1 <a href="hidden.html#R1">=</a> <font color="Maroon">q</font> &amp;  <a href="finseq_1.html#K3">len</a> <span class="p1">(<span class="default"><font color="Maroon">q</font>,<font color="Maroon">w</font> <a href="fsm_1.html#K2" target="_self">-admissible</a> </span>)</span> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <font color="Maroon">w</font></span>)</span> <a href="nat_1.html#K1">+</a> 1 &amp; ( for <font color="Olive">i</font> being   <a href="subset_1.html#M1">Element</a> of  <a href="numbers.html#K5">NAT</a>   st 1 <a href="xxreal_0.html#R1">&lt;=</a> <font color="Olive">i</font> &amp; <font color="Olive">i</font> <a href="xxreal_0.html#R1">&lt;=</a>  <a href="finseq_1.html#K3">len</a> <font color="Maroon">w</font> holds <br/> ex <font color="Olive">wi</font> being   <a href="subset_1.html#M1">Element</a> of <font color="Maroon">IAlph</font> ex <font color="Olive">qi</font>, <font color="Olive">qi1</font> being  <a href="fsm_1.html#NM1">State</a> of <font color="Maroon">fsm</font> st <br/>( <font color="Olive">wi</font> <a href="hidden.html#R1">=</a> <font color="Maroon">w</font> <a href="funct_1.html#K1">.</a> <font color="Olive">i</font> &amp; <font color="Olive">qi</font> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><font color="Maroon">q</font>,<font color="Maroon">w</font> <a href="fsm_1.html#K2" target="_self">-admissible</a> </span>)</span> <a href="funct_1.html#K1">.</a> <font color="Olive">i</font> &amp; <font color="Olive">qi1</font> <a href="hidden.html#R1">=</a> <span class="p1">(<span class="default"><font color="Maroon">q</font>,<font color="Maroon">w</font> <a href="fsm_1.html#K2" target="_self">-admissible</a> </span>)</span> <a href="funct_1.html#K1">.</a> <span class="p1">(<span class="default"><font color="Olive">i</font> <a href="nat_1.html#K1">+</a> 1</span>)</span> &amp; <font color="Olive">wi</font> <a href="fsm_1.html#K1" target="_self">-succ_of</a> <font color="Olive">qi</font> <a href="hidden.html#R1">=</a> <font color="Olive">qi1</font> ) ) )
 <b>by </b><i/>;<br/><b>hence </b><a NAME="E3:25_1"/>
<font color="Maroon">q</font>,<font color="Maroon">w</font> <a href="fsm_1.html#R1" target="_self">-leads_to</a> <font color="Maroon">q'</font>
 <b>by </b><i>, </i>;<br/></div>
<b>end;</b></div>

<b>assume </b><a NAME="E2:25"/>
<font color="Maroon">q</font>,<font color="Maroon">w</font> <a href="fsm_1.html#R1" target="_self">-leads_to</a> <font color="Maroon">q'</font>
 ;<br/>

<a NAME="E3:25"/><b>then </b>
<span class="p1">(<span class="default"><font color="Maroon">q</font>,<font color="Maroon">w</font> <a href="fsm_1.html#K2" target="_self">-admissible</a> </span>)</span> <a href="funct_1.html#K1">.</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="finseq_1.html#K3">len</a> <font color="Maroon">w</font></span>)</span> <a href="nat_1.html#K1">+</a> 1</span>)</span> <a href="hidden.html#R1">=</a> <font color="Maroon">q'</font>
 
<b>by </b><i/>;<br/>
<b>hence </b><a NAME="E4:25"/>
<span class="p1">(<span class="default"><font color="Maroon">q</font>,<font color="Maroon">w</font> <a href="fsm_1.html#K2" target="_self">-admissible</a> </span>)</span> <a href="funct_1.html#K1">.</a> <span class="p1">(<span class="default"><a href="finseq_1.html#K3">len</a> <span class="p2">(<span class="default"><font color="Maroon">q</font>,<font color="Maroon">w</font> <a href="fsm_1.html#K2" target="_self">-admissible</a> </span>)</span></span>)</span> <a href="hidden.html#R1">=</a> <font color="Maroon">q'</font>
 <b>by </b><i/>;<br/>


</div>
