Authors: Colin James III
We evaluate the example of mapping the Sahlqvist formula of p ∧ ◊p → ◻p into corresponding quantified expressions. The formula is not a theorem, but the corresponding quantified expressions are theorems. Hence the mapping refutes the Sahlqvist correspondence theory. Therefore these failures are non tautologous fragments of the universal logic VŁ4.
Comments: 2 Pages. © Copyright 2019 by Colin James III All rights reserved. Respond to author by email only: info@cec-services dot com. See updated abstract at ersatz-systems.com. (We warn troll Mikko at Disqus to read the article four times before hormonal typing.)
[v1] 2019-04-03 15:30:21
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