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<b>let </b><font color="Maroon">i1</font> be   <a href="int_1.html#NM1">Integer</a>;<br/>

<a NAME="E1:36"/>
( <font color="Maroon">i1</font> <a href="xcmplx_0.html#K3">*</a> 1 <a href="hidden.html#R1">=</a> <font color="Maroon">i1</font> <a href="xcmplx_0.html#K6">-</a> 0 &amp; <font color="Maroon">i1</font> <a href="xcmplx_0.html#K3">*</a> <span class="p1">(<span class="default"><a href="real_1.html#K1">-</a> 1</span>)</span> <a href="hidden.html#R1">=</a> 0 <a href="xcmplx_0.html#K6">-</a> <font color="Maroon">i1</font> )
 
;<br/>
<b>hence </b><a NAME="E2:36"/>
( <font color="Maroon">i1</font>,0 <a href="int_1.html#R1" target="_self">are_congruent_mod</a> <font color="Maroon">i1</font> &amp; 0,<font color="Maroon">i1</font> <a href="int_1.html#R1" target="_self">are_congruent_mod</a> <font color="Maroon">i1</font> )
 <b>by </b><i/>;<br/>


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