One useful logic that defines its own truth

Existential fixed point logic (EFPL) is a natural fit for some applications, and the purpose of this talk is to attract attention to EFPL. The logic is also interesting in its own right as it has attractive properties. One of those properties is rather unusual: truth of formulas can be defined (given appropriate syntactic apparatus) in the logic. We mentioned that property elsewhere, and we use this opportunity to provide the proof. Believe those who are seeking the truth. Doubt those who find it. --Andr

• Type: Journal
• Year: 2008
• Where: CORR
• Authors: Andreas Blass, Yuri Gurevich
• Keywords: CORR 2008, Education, Existential Fixed Point, Logic, Natural Fit