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<b>let </b><font color="Maroon">c<sub>1</sub></font> be   <a href="nat_1.html#NM1">Nat</a>;<br/>

<a NAME="E1:4"/>
<font color="Maroon">c<sub>1</sub></font> <a href="finseqop.html#K4">|-&gt;</a> 0 is    <a href="finseq_1.html#M2">FinSequence</a> of  <a href="margrel1.html#K6">BOOLEAN</a> 
 
<b>by </b><i><a class="ref" href="finseq_2.html#T77">FINSEQ_2:77</a>, <a class="ref" href="margrel1.html#D13">MARGREL1:def 13</a></i>;<br/>
<a NAME="E2:4"/><b>then </b>
 <a href="euclid.html#K5">0*</a> <font color="Maroon">c<sub>1</sub></font> is    <a href="finseq_1.html#M2">FinSequence</a> of  <a href="margrel1.html#K6">BOOLEAN</a> 
 
;<br/>
<b>hence </b><a NAME="E3:4"/>
 <a href="euclid.html#K5">0*</a> <font color="Maroon">c<sub>1</sub></font> <a href="hidden.html#R2">in</a> <a href="margrel1.html#K6">BOOLEAN</a>  <a href="finseq_1.html#K13">*</a> 
 <b>by </b><i><a class="ref" href="finseq_1.html#D11">FINSEQ_1:def 11</a></i>;<br/>


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