We have been studying the action of the difference operator ''D'', also known as the ''localization operator'', on the proposition ''f'' : ''X'' × ''Y'' → '''B''' that is commonly known as the conjunction ''xy''. We described ''Df'' as a (first order) differential proposition, that is, a proposition of the type ''Df'' : ''X'' × ''Y'' × ''dX'' × ''dY'' → '''B'''. .Abstracting from the augmented venn diagram that illustrates how the ''models'', or the ''satisfying interpretations'', of ''Df'' distribute within the extended universe ''EU'' = ''X'' × ''Y'' × ''dX'' × ''dY'', we can depict ''Df'' in the form of a ''digraph'' or ''directed graph'', one whose points are labeled with the elements of ''U'' = .''X'' × ''Y'' and whose arrows are labeled with the elements of ''dU'' = ''dX'' × ''dY''. | We have been studying the action of the difference operator ''D'', also known as the ''localization operator'', on the proposition ''f'' : ''X'' × ''Y'' → '''B''' that is commonly known as the conjunction ''xy''. We described ''Df'' as a (first order) differential proposition, that is, a proposition of the type ''Df'' : ''X'' × ''Y'' × ''dX'' × ''dY'' → '''B'''. .Abstracting from the augmented venn diagram that illustrates how the ''models'', or the ''satisfying interpretations'', of ''Df'' distribute within the extended universe ''EU'' = ''X'' × ''Y'' × ''dX'' × ''dY'', we can depict ''Df'' in the form of a ''digraph'' or ''directed graph'', one whose points are labeled with the elements of ''U'' = .''X'' × ''Y'' and whose arrows are labeled with the elements of ''dU'' = ''dX'' × ''dY''. |