The Σ1-provability logic of HA

Autor: Mohammad Ardeshir, S. Mojtaba Mojtahedi
Rok vydání: 2018
Předmět:
Zdroj: Annals of Pure and Applied Logic. 169:997-1043
ISSN: 0168-0072
DOI: 10.1016/j.apal.2018.05.001
Popis: In this paper we introduce a modal theory iH σ which is sound and complete for arithmetical Σ 1 -interpretations in HA , in other words, we will show that iH σ is the Σ 1 -provability logic of HA . Moreover we will show that iH σ is decidable. As a by-product of these results, we show that HA + □ ⊥ has de Jongh property.
Databáze: OpenAIRE