  o                       o        |
|                                                 |
o-------------------------------------------------o
Figure 10.  Dyadic Relations G, H c X x Y

Mark that H is not exactly the same H that we had before,
because this H is presented in the same plane X x Y as G.
Whether you view isomorphic things to be the same things
or not, you still have to specify the exact isomorphisms
that are needed to transform any given representation of
a thing into a required representation of