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Re: Differential Propositional Calculus • Discussion • (4) • (5) • (6)
Re: Laws of Form • Lyle Anderson
Re: Peirce List • Mauro Bertani

Dear Lyle,

Yes, the ability to work with functions as “first class citizens”, as we used to say, is one of the things making lambda calculus at the theoretical level and Lisp at the practical level so nice.  All of which takes us straight into Curry-Howard-ville …

Dear Mauro,

That is the right ball park, functional calculi and all that.  I haven’t been taking time out to mention all the players apart from Peirce and Spencer Brown — Boole, Frege, Schönfinkel, Curry, Howard, and others — because I’m still in the middle of tackling Helmut Raulien’s question about the link between cactus graphs and differential logic.  At any rate I’ll be focused on that for a while longer.

Regards,

Jon

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