Set Theory and Logic


Availability of Meth8/VŁ4 Demo for 2-Variables (P,q) with Unlimited Sequents

Authors: Colin James III

This is free on request from Please state name and organization to receive: Unrestricted m8_executable.exe; Instructions.txt with known anomalies; and Editable sample meth8_input_file.txt. The input file contains the shortest confirmation of McCune's proof of Huntington's equation: (~(~p+q)+~(~p+~q))=p. The input file contains the shortest refutation of paraconsistent logic: ((p>q)&(q>p))&((~p>~q)&(~q>~p)). The input file also contains the refutation for provability logic of the Gödel-Löb axiom GL as, "The necessity of choice, as always implying a choice, implies always a choice": #(#p>p)>#p.

Comments: 1 Page. Copyright 2019 by Colin James III All rights reserved. Respond to author by email only: info@cec-services dot com. See updated abstract at

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Submission history

[v1] 2019-08-21 19:12:23
[v2] 2019-08-22 08:37:48 (removed)
[v3] 2019-08-23 19:04:22

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