John, List:
JFS: One reason why I did not respond in detail to your previous note
(copied below) is that your citations to the writings by Dunn and Goble
only apply to PROPOSITIONAL modal logic (no quantifiers).
I have acknowledged this all along--my candidate for Delta EGs is an
extension of
Jon,
One reason why I did not respond in detail to your previous note (copied
below) is that your citations to the writings by Dunn and Goble only apply to
PROPOSITIONAL modal logic (no quantifiers). Every version of modal logic that
Peirce developed included existential graphs as the base
