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<b>let </b><font color="Maroon">c<sub>1</sub></font> be    <a href="orders_4.html#M1" target="_self">Chain</a> ;<br/>

<a NAME="E1:3_1_1"/>
( <font color="Maroon">c<sub>1</sub></font> is  non <a href="struct_0.html#V3">empty</a> <a href="waybel_0.html#V16">connected</a> <a href="orders_2.html#NM1">Poset</a> or <font color="Maroon">c<sub>1</sub></font> is  <a href="struct_0.html#V3">empty</a>  <a href="orders_2.html#L1">RelStr</a>  )
 
<b>by </b><i><a class="ref" href="orders_4.html#D1" target="_self">Def1</a></i>;<br/>
<b>hence </b><a NAME="E2:3_1_1"/>
( <font color="Maroon">c<sub>1</sub></font> is <a href="orders_2.html#V2">reflexive</a> &amp; <font color="Maroon">c<sub>1</sub></font> is <a href="orders_2.html#V3">transitive</a> &amp; <font color="Maroon">c<sub>1</sub></font> is <a href="orders_2.html#V4">antisymmetric</a> )
 ;<br/>


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