ot;i&quot;           |
o---------------o---------------o---------------o

JA: One way to read these 3-adic sign relations is to recognize that
    the 2-adic relations formed by the sign and interpretant columns
    constitute equivalence relations, and this property allows us to
    graph the pertinent facts as shown in the next couple of Figures ...

JD: Good idea!
    Then why not just have two tables instead of
    the 'join' of them which is much more bulky.

Object-Sign Relation L'(A)
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