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<b>let </b><font color="Maroon">U0</font> be   <a href="unialg_1.html#NM2">Universal_Algebra</a>;<br/><b>let </b><font color="Maroon">U1</font> be    <a href="unialg_2.html#M3" target="_self">SubAlgebra</a> of <font color="Maroon">U0</font>, <font color="Maroon">U2</font> be    <a href="unialg_2.html#M3" target="_self">SubAlgebra</a> of <font color="Maroon">U0</font>;<br/>



<b>reconsider </b><font color="Maroon">u1</font> = the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">U1</font>, <font color="Maroon">u2</font> = the <a href="struct_0.html#U1">carrier</a> of <font color="Maroon">U2</font> as  non <a href="xboole_0.html#V1">empty</a> <a href="struct_0.html#NM2">Subset</a> of <font color="Maroon">U0</font> <b>by </b><i/>;<br/>
<b>reconsider </b><font color="Maroon">A</font> = <font color="Maroon">u1</font> <a href="subset_1.html#K4">\/</a> <font color="Maroon">u2</font> as  non <a href="xboole_0.html#V1">empty</a> <a href="struct_0.html#NM2">Subset</a> of <font color="Maroon">U0</font> ;<br/>
<a NAME="E3:42"/>
<font color="Maroon">U1</font> <a href="unialg_2.html#K8" target="_self">"\/"</a> <font color="Maroon">U2</font> <a href="hidden.html#R1">=</a>  <a href="unialg_2.html#K7" target="_self">GenUnivAlg</a> <font color="Maroon">A</font>
 
<b>by </b><i/>;<br/>
<b>hence </b><a NAME="E4:42"/>
<font color="Maroon">U1</font> <a href="unialg_2.html#K8" target="_self">"\/"</a> <font color="Maroon">U2</font> <a href="hidden.html#R1">=</a> <font color="Maroon">U2</font> <a href="unialg_2.html#K8" target="_self">"\/"</a> <font color="Maroon">U1</font>
 <b>by </b><i/>;<br/>


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