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MyWikiBiz, Author Your Legacy — Sunday November 24, 2024
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→‎Note 16: good lord this is tedious
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It is part of the definition of a group that the 3-adic relation ''L''&nbsp;&sube;&nbsp;''G''<sup>3</sup> is actually a function ''L''&nbsp;:&nbsp;''G''&nbsp;&times;&nbsp;''G''&nbsp;&rarr;&nbsp;''G''. It is from this functional perspective that we can see an easy way to derive the two regular representations. Since we have a function of the type ''L''&nbsp;:&nbsp;''G''&nbsp;&times;&nbsp;''G''&nbsp;&rarr;&nbsp;''G'', we can define a couple of substitution operators:
It is part of the definition of a group that the 3-adic
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relation L c G^3 is actually a function L : G x G -> G.
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It is from this functional perspective that we can see
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an easy way to derive the two regular representations.
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Since we have a function of the type L : G x G -> G,
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we can define a couple of substitution operators:
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1.  Sub(x, <_, y>) puts any specified x into
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# Sub(''x'',&nbsp;(_,&nbsp;''y'')) puts any specified ''x'' into the empty slot of the rheme (_,&nbsp;y), with the effect of producing the saturated rheme (''x'',&nbsp;''y'') that evaluates to ''xy''.
    the empty slot of the rheme <_, y>, with
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# Sub(''x'',&nbsp;(''y'',&nbsp;_)) puts any specified ''x'' into the empty slot of the rheme (''y'',&nbsp;_), with the effect of producing the saturated rheme (''y'',&nbsp;''x'') that evaluates to ''yx''.
    the effect of producing the saturated
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    rheme <x, y> that evaluates to xy.
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2.  Sub(x, <y, _>) puts any specified x into
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In (1), we consider the effects of each ''x'' in its practical bearing on contexts of the form (_,&nbsp;''y''), as ''y'' ranges over ''G'', and the effects are such that ''x'' takes (_,&nbsp;''y'') into ''xy'', for ''y'' in ''G'', all of which is summarily notated as ''x''&nbsp;=&nbsp;{(''y''&nbsp;:&nbsp;''xy'')&nbsp;:&nbsp;''y'' in ''G''}. The pairs (''y''&nbsp;:&nbsp;''xy'') can be found by picking an ''x'' from the left margin of the group operation table and considering its effects on each ''y'' in turn as these run across the top margin.  This aspect of pragmatic definition we recognize as the regular ante-representation:
    the empty slot of the rheme <y, _>, with
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    the effect of producing the saturated
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    rheme <y, x> that evaluates to yx.
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In (1), we consider the effects of each x in its
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practical bearing on contexts of the form <_, y>,
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as y ranges over G, and the effects are such that
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x takes <_, y> into xy, for y in G, all of which
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is summarily notated as x = {(y : xy) : y in G}.
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The pairs (y : xy) can be found by picking an x
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from the left margin of the group operation table
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and considering its effects on each y in turn as
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these run across the top margin.  This aspect of
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pragmatic definition we recognize as the regular
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ante-representation:
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<pre>
 
   e  =  e:e  +  f:f  +  g:g  +  h:h
 
   e  =  e:e  +  f:f  +  g:g  +  h:h
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   h  =  e:h  +  f:g  +  g:f  +  h:e
 
   h  =  e:h  +  f:g  +  g:f  +  h:e
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</pre>
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<pre>
 
In (2), we consider the effects of each x in its
 
In (2), we consider the effects of each x in its
 
practical bearing on contexts of the form <y, _>,
 
practical bearing on contexts of the form <y, _>,
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