<?xml version="1.0"?>
<div class="add">

<b>let </b><font color="Maroon">c<sub>1</sub></font> be  non <a href="struct_0.html#V3">empty</a> <a href="rlvect_1.html#V4">add-associative</a> <a href="rlvect_1.html#V5">right_zeroed</a> <a href="rlvect_1.html#V6">right_complementable</a> <a href="group_1.html#V2">unital</a>  <a href="vectsp_1.html#L3">doubleLoopStr</a> ;<br/><b>let </b><font color="Maroon">c<sub>2</sub></font> be   <a href="struct_0.html#NM7">Function</a> of <font color="Maroon">c<sub>1</sub></font>,<font color="Maroon">c<sub>1</sub></font>;<br/>



<a NAME="E1:70"/>
( <font color="Maroon">c<sub>2</sub></font> is <a href="mod_4.html#V7" target="_self">antiisomorphism</a> iff  <a href="mod_4.html#K7" target="_self">opp</a> <font color="Maroon">c<sub>2</sub></font> is <a href="mod_4.html#V6" target="_self">isomorphism</a> )
 
<b>by </b><i><a class="ref" href="mod_4.html#T42" target="_self">Th42</a></i>;<br/>
<b>hence </b><a NAME="E2:70"/>
( <font color="Maroon">c<sub>2</sub></font> is <a href="mod_4.html#V11" target="_self">antiautomorphism</a> iff  <a href="mod_4.html#K7" target="_self">opp</a> <font color="Maroon">c<sub>2</sub></font> is <a href="mod_4.html#V6" target="_self">isomorphism</a> )
 <b>by </b><i><a class="ref" href="mod_4.html#D16" target="_self">Def16</a></i>;<br/>


</div>
