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We describe a method for the automatic assembly of aviation safety cases by combining auto-generated argument fragments derived from the application of a formal method to software, with manually created argument fragments derived from system safety analysis. Our approach emphasizes the heterogeneity of safety-relevant information and we show how such diverse content can be integrated into a single...
In the constructive setting, membership predicates over recursive types are inhabited by terms indexing the elements that satisfy the criteria for membership. In this paper, we motivate and explore this idea in the concrete setting of lists and trees. We show that the inhabitants of membership predicates are precisely the inhabitants of a generic shape type. We show that membership of x (of type T)...
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