Isaac Scientific Publishing

# Journal of Advances in Applied Mathematics

### Bounds of Proof Complexities in Some Systems for Many Valued Logics

Download PDF (353.7 KB) PP. 164 - 172 Pub. Date: July 31, 2017

### Author(s)

• Arman Tshitoyan*
PhD Student, Department of Informatics and Applied Mathematics, Yerevan State University, Yerevan, Armenia

### Abstract

In this paper the main proof complexity characteristics in two types of proof systems for a version of many valued propositional logic are investigated for some class of k-valued ( k ≥ 3 ) tautologies. We consider a Hilbert style cut free system and a system, which is dual to resolution system, for many valued logic with implication, defined by Gödel, and negation, defined by permuting the truth values cyclically. For considered class of tautologies we obtain simultaneously optimal bounds for different proof complexity measures (asymptotically the same upper and lower bounds for each measures).

### Keywords

Many-valued logics, Hilbert style proof systems, sequent proof systems, elimination systems, proof complexity.

### References

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