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Abstract:
Non-classical logics, and in particular many-valued logics, are increasingly
used in the study of formal aspects of computing. For example, a recent paper
by P. F. Gibbins in this \em Journal presents a 3-valued propositional logic
for VDM. In the use of such logics one naturally relies on earlier work done by
logicians, a case in point being Gibbin's use of the concept of
autodescriptivity, introduced by N. Rescher. The purpose of this Note is to
sound a warning that Rescher's exposition of autodescriptivity is seriously
flawed, and to clarify the autodescriptivity of the logic of VDM.
