Neighborhood Contingency Logic: A New Perspective

2018/02/07 by Fan, Jie
#03B45 #FOS: Computer and information sciences #FOS: Mathematics #Logic (math.LO) #Logic in Computer Science (cs.LO)

paper · doi:10.48550/arxiv.1802.02291

Abstract

In this paper, we propose a new neighborhood semantics for contingency logic, by introducing a simple property in standard neighborhood models. This simplifies the neighborhood semantics given in (Fan and van Ditmarsch, 2015), but does not change the set of valid formulas. Under this perspective, among various notions of bisimulation and respective Hennessy-Milner Theorems, we show that c-bisimulation is equivalent to nbh-Δ-bisimulation in the literature, which guides us to understand the essence of the latter notion. This perspective also provides various frame definability and axiomatization results.

Related

• A sequence of neighborhood contingency logics
• Inquisitive Neighborhood Logic
• Analysing Spatial Properties on Neighbourhood Spaces
• On Bisimilarity for Quasi-discrete Closure Spaces
• Intuitionistic modal logic based on neighborhood semantics without superset axiom