• An Approach to Flexible Multilevel Modelling 

      Macias, Fernando; Rutle, Adrian; Stolz, Volker; Rodriguez-Echeverria, Roberto; Wolter, Uwe Egbert (Peer reviewed; Journal article, 2018-07-12)
      Multilevel modelling approaches tackle issues related to lack of flexibility and mixed levels of abstraction by providing features like deep modelling and linguistic extension. However, the lack of a clear consensus on ...
    • A Diagrammatic Logic for Object-Oriented Visual Modeling 

      Diskin, Zinovy; Wolter, Uwe Egbert (Peer reviewed; Journal article, 2008-11-21)
      Formal generalized sketches is a graph-based specification format that borrows its main ideas from categorical and ordinary first-order logic, and adapts them to software engineering needs. In the engineering jargon, it ...
    • Indexed and Fibred Structures for Hoare Logic 

      Wolter, Uwe Egbert; Martini, Alfio; Haeusler, Edward Hermann (Journal article; Peer reviewed, 2020)
      Indexed and fibred categorical concepts are widely used in computer science as models of logical systems and type theories. Here we focus on Hoare logic and show that a comprehensive categorical analysis of its axiomatic ...