RT Journal T1 Beyond Language: Using Logic to Introduce New Philosophical Distinctions A1 Sven Ove Hansson PB Front. Philos. China FD 2013-09-05 YR 2013 JF Frontiers of Philosophy in China JO Front. Philos. China VO 8 IS 3 SP 498 DO 10.3868/s030-002-013-0039-9 K1 logic;formalization;structuralization;deontic logic;conditional obligation;conditional permission;dyadic deontic logic;counterfactual conditionals LK {https://journal.hep.com.cn/fpc/EN/article/article_4078.shtml}