研究方向

关于agency的逻辑，包括策略推理，道义逻辑，法律推理等

自然语言（模态词、条件句、祈使句等）的语义及相关逻辑

English：

logic about agency, including strategic reasoning, deontic logic, and legal reasoning

semantics of natural language (modalities, conditionals, and imperatives) and related logic

个人主页：http://www.didadida.org/jufengkui/

讲授课程

公理集合论、哲学逻辑专题研究、逻辑史专题研究、哲学逻辑、逻辑史

English：axiomatic set theory, topics in philosophical logic, topics in history of logic, philosophical logic, history of logic

学术研究

学术成果

Agency逻辑方面的部分论文：

1. Yinfeng Li and Fengkui Ju, A minimal coalition logic, Journal of Logic and Computation, Volume 35, Issue 8, 2025

2. Yinfeng Li and Fengkui Ju, Completeness of two fragments of a logic for conditional strategic reasoning, Logic Journal of the IGPL, Volume 33, Issue 5, 2025

3. Thomas Agotnes and Fengkui Ju. Next-Time Coalition Logic. In: Valentin Goranko, Chenwei Shi, and Wei Wang, editors, Proceedings of the 10th International Conference on Logic, Rationality, and Interaction, pages 18-33. Springer, 2025.

4. Zixuan Chen and Fengkui Ju. Each of Those Eight Coalition Logics is Also Determined by Four Other Kinds of Models. In Thomas Agotnes and Dragan Doder, editors, Proceedings of the 6th International Conference on Logic and Argumentation, pages 17-33. Springer, 2025.

5. Jan van Eijck, Fengkui Ju and Tianwen Xu. Modeling dynamics of legal relations with dynamic logic. Journal of Logic and Computation, 34(2): 372-398, 2024.

6. Fengkui Ju and Karl Nygren. Normative properties of sequential actions. In Juliano Maranhao, Clayton Peterson, Christian Straber, and Leon van der Torre, editors, Proceedings of the 16th International Conference on Deontic Logic and Normative Systems, pages 139–157. College Publications, 2023.

7. Tianwen Xu and Fengkui Ju. Multi-agent logic for reasoning about duties and powers in private law. In Matthias Grabmair, editor, Proceedings of the Nineteenth International Conference on Artificial Intelligence and Law, pages 361–370. Association for Computing Machinery, 2023.

8. Fengkui Ju and Jan van Eijck. A temporal dynamic deontic logic. Journal of Logic and Computation, 29(2):265–284, 2019.

9. Valentin Goranko and Fengkui Ju. Towards a logic for conditional local strategic reasoning. In Patrick Blackburn, Emiliano Lorini, and Meiyun Guo, editors, Proceedings of the 7th International Workshop on Logic, Rationality, and Interaction, pages 112–125. Springer Berlin Heidelberg, 2019.

10. Fengkui Ju and Li Liang. Commands changing obligations. Journal of Logic and Computation, 28(8):1735–1755, 2018. 

11. Fengkui Ju. S5 as a deontic logic. In J. Broersen, C. Condoravdi, S. Nair, and G. Pigozzi, editors, Proceedings of the 14th International Conference on Deontic Logic and Normative Systems, pages 177–192. College Publications, 2018.

12. Fengkui Ju and Xiangmei Hu. On axiomatization of boolean modalities. 逻辑学研究, 8(1):23–36, 2015.

自然语言方面的部分论文

13. Fengkui Ju. A logical theory for conditional weak ontic necessity in branching time. Studia Logica. 112: 933–966, 2024. 

14. Fengkui Ju. A logical theory for conditional weak ontic necessity based on context update. Journal of Logic, Language and Information, 32:777-807, 2023. 

15. 琚凤魁和秦颁. 语境中后件为真式条件句的语用和语义. 澳门语言学刊, (1):40–50, 2023. 

16. Fengkui Ju and Fenrong Liu. Prioritized imperatives and normative conflicts. European Journal of Analytic Philosophy, 7(2):33–54, 2011.

17. Fengkui Ju. Imperatives and logic. 逻辑学研究, 3(2):26–52, 2010.

18. Fengkui Ju, Gianluca Grilletti, and Valentin Goranko. A logic for temporal conditionals and a solution to the sea battle puzzle. In G. Bezhanishvili, G. D’Agostino, G. Metcalfe, and T. Studer, editors, Proceedings of the 12th International Conference on Advances in Modal Logic, pages 407–426. College Publications, 2018.

荣誉奖励

个人履历

个人学习及工作经历

琚凤魁，男，1978年4月生，河南安阳人，于2011年1月从北京大学哲学系逻辑学专业获博士学位，现任北京师范大学哲学学院副教授，逻辑学专业硕士研究生导师。

社会工作

教学与人才培养

教学奖励

学生培养情况