主题

Compositionality, Consequence, and the Meaning of Logical Constants

主讲人

Dag Westerståhl

Stockholm University, Tsinghua University, Beijing

与谈人

余俊伟

中国人民大学哲学学院教授

主持人

郝旭东

华东师大哲学系

讲座时间

2024年10月18日（周五）

17:00-18:30

讲座地点

腾讯会议: 436594133

密码：472326

Dag Westerstahl is a Professor of Theoretical Philosophy and Logic at Stockholm University. His interests include logic, formal semantics, and philosophy of language, with a special emphasis on integrating themes such as on generalized quantifiers, studied both from a logical and a linguistic point of view. He has been the Secretary General of the International Division of Logic and Methodology of Science, and he is a member of the Royal Society of Arts and Sciences in Gothenburg and of the Royal Swedish Academy of Sciences.

Dag Westerstahl是斯德哥尔摩大学理论哲学和逻辑学教授和清华大学金岳霖讲席教授。他的兴趣包括逻辑、形式语义学和语言哲学，特别关注从逻辑和语言学的角度研究广义量词等综合主题。他曾担任逻辑和科学方法论国际分部的秘书长，他还是瑞典皇家科学院的院士和哥德堡皇家艺术与科学学会的院士。

The lecture will outline three steps in the process of assigning meanings to logical constants (in the sense that, for example, the standard meaning of the disjunction symbol in classical propositional logic is a certain truth table), after illustrating with examples from several logical languages. Compositionality is a prerequisite, and I argue that without compositionality, the idea of such meanings makes little sense. Reasons for choosing a standard or intended meaning among the many possible ones are discussed, in particular in connection with Carnap’s Categoricity Problem, i.e. the idea that the standard meanings should be fixed by the relevant consequence relation.