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Symmetric Contingency Logic with Unlimitedly Many Modalities

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Abstract

The completeness of the axiomatization of contingency logic over symmetric frames has been thought of as a nontrivial job, the unimodal case of which cannot be generalized to the finitely multimodal case, which in turn cannot be generalized to the infinitely multimodal case. This paper deals with the completeness of symmetric contingency logic with unlimitedly many modalities, no matter whether the set of modalities is finite or infinite.

Keywords

Contingency Symmetric frames Axiomatization Completeness Unlimitedly many modalities 

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Notes

Acknowledgements

This research is supported by the project 17CZX053 of National Social Science Fundation of China. We would like to acknowledge an anonymous referee for his/her insightful comments.

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© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.School of HumanitiesUniversity of Chinese Academy of SciencesBeijingChina

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