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- Haykal Tej, Burkhart Wolff
- FME
- 1997

We present a failure-divergence model for CSP following the concepts of [BR 85]. Its formal representation within higher order logic in the theorem prover Isabelle/HOL [Pau 94] revealed an error in the basic definition of CSP concerning the treatment of the termination symbol tick. A corrected model has been formally proven consistent with Isabelle/HOL.… (More)

- Haykal Tej
- 2003

- Christoph Lüth, Haykal Tej, Kolyang, Bernd Krieg-Brückner
- FASE
- 1999

We will present two tools, TAS and IsaWin, for transformational program development and theorem proving respectively, based on the theorem prover Isabelle [9]. Their distinguishing features are a graphical user interface based on the principle of direct manipulation, and a generic, open system design which allows the development of a family of tools for… (More)

- Haykal Tej, B . Wol
- 2007

This paper describes the modelling of transformational program development inside a tactical theorem prover. The main characteristics of this approach is its genericity, leading to tools suitable for transformational program development in various, diierent formal methods which are logically embedded into the theorem prover. Combined with a systematic way… (More)

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