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<b>let </b><font color="Maroon">R</font> be  non <a href="struct_0.html#V3">empty</a>  <a href="orders_2.html#L1">RelStr</a> , <font color="Maroon">S</font> be  non <a href="struct_0.html#V3">empty</a>  <a href="orders_2.html#L1">RelStr</a> , <font color="Maroon">T</font> be  non <a href="struct_0.html#V3">empty</a>  <a href="orders_2.html#L1">RelStr</a> ;<br/>

<b>assume </b><a NAME="E1:21"/>
( <font color="Maroon">R</font> <a href="necklace.html#R3" target="_self">is_equimorphic_to</a> <font color="Maroon">S</font> &amp; <font color="Maroon">S</font> <a href="necklace.html#R3" target="_self">is_equimorphic_to</a> <font color="Maroon">T</font> )
 ;<br/>

<a NAME="E2:21"/><b>then </b>
( <font color="Maroon">R</font> <a href="necklace.html#R2" target="_self">embeds</a> <font color="Maroon">S</font> &amp; <font color="Maroon">S</font> <a href="necklace.html#R2" target="_self">embeds</a> <font color="Maroon">R</font> &amp; <font color="Maroon">S</font> <a href="necklace.html#R2" target="_self">embeds</a> <font color="Maroon">T</font> &amp; <font color="Maroon">T</font> <a href="necklace.html#R2" target="_self">embeds</a> <font color="Maroon">S</font> )
 
<b>by </b><i/>;<br/>
<a NAME="E3:21"/><b>then </b>
( <font color="Maroon">R</font> <a href="necklace.html#R2" target="_self">embeds</a> <font color="Maroon">T</font> &amp; <font color="Maroon">T</font> <a href="necklace.html#R2" target="_self">embeds</a> <font color="Maroon">R</font> )
 
<b>by </b><i/>;<br/>
<b>hence </b><a NAME="E4:21"/>
<font color="Maroon">R</font> <a href="necklace.html#R3" target="_self">is_equimorphic_to</a> <font color="Maroon">T</font>
 <b>by </b><i/>;<br/>


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