On 2/27/2013 9:14 PM, Bruno Marchal wrote:
The UD is one program. It is one string. And UD* is an infinitely complex structure, roughly equivalent to sigma_1 truth, and structured from inside by the 8 hypostases, none being boolean.
Hi Bruno,

Sigma_1 logic is more powerful than Boolean algebras, but this does not allow Sigma_N logics to escape from the necessity of satisfiability.



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