Logic and Argumentation Third International Conference, CLAR 2020, Hangzhou, China, April 6–9, 2020, Proceedings

Group Belief.- Broadening Label-based Argumentation Semantics with May-Must Scales.- Semirings of Evidence.- Logic Programming, Argumentation and Human Reasoning.- Reasoning about Degrees of Con rmation.- Ideal related algebras and their logics { Extended abstract.- Computer-supported Analysis of Arguments in Climate Engineering.-A Logic of Knowledge and Belief Based on Abstract Arguments.- A Meta-level Annotation Language for Legal Texts.- Towards an Executable Methodology for the Formalization of Legal Texts.- Goal-driven Structured Argumentation for Patient Management in a Multimorbidity Setting.- Intuitionistic-Bayesian Semantics of First-Order Logic for Generics.- Ambiguity Preference and Context Learning in Uncertain Signaling.- A Decidable Multi-Agent Logic for Reasoning about Actions, Instruments, and Norms.- Preservation of Admissibility with Rationality and Feasibility Constraints.- Uncertainty in Argumentation Schemes: Negative Consequences and Basic Slippery Slope.- Reasoning as Speech Acts.- Dynamics of Fuzzy Argumentation Frameworks .- Probabilistic three-value argumentation frameworks.- Further Steps Towards a Logic of Polarization in Social Networks.- A Formalization of the Slippery Slope Argument.