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<b>let </b><font color="Maroon">c<sub>1</sub></font> be    <a href="orders_2.html#L1">RelStr</a> ;<br/>

<b>assume </b><a NAME="E1:23_1_1"/>
<font color="Maroon">c<sub>1</sub></font> is <a href="roughs_1.html#V2" target="_self">with_equivalence</a>
 ;<br/>

<a NAME="E2:23_1_1"/><b>then </b>
the <a href="orders_2.html#U1">InternalRel</a> of <font color="Maroon">c<sub>1</sub></font> is   <a href="eqrel_1.html#NM2">Equivalence_Relation</a> of the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">c<sub>1</sub></font>
 
<b>by </b><i><a class="ref" href="roughs_1.html#D2" target="_self">Def2</a></i>;<br/>
<b>hence </b><a NAME="E3:23_1_1"/>
<font color="Maroon">c<sub>1</sub></font> is <a href="roughs_1.html#V3" target="_self">with_tolerance</a>
 <b>by </b><i><a class="ref" href="roughs_1.html#D3" target="_self">Def3</a></i>;<br/>


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