[Jprogramming] Identity for = and ~:

[Elijah Stone]

The identity elements for = and ~: are 1 and 0 respectively, as 
illustrated by:

   =/''
1
   ~:/''
0

I expect the identity element for some function f to be the value x such 
that, for any y, y -: y f x.  But this is clearly not the case here.

Why not?
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