This book describes some basic principles that allow developers of computer programs (computer scientists, software engineers, programmers) to clearly think about the artifacts they deal with in their daily work: data types, programming languages, programs written in these languages that compute wanted outputs from given inputs, and programs that describe continuously executing systems. The core message is that clear thinking about programs can be expressed in a single, universal language, the formal language of logic . Apart from its universal elegance and expressiveness, this logical approach to the formal modeling of, and reasoning about, computer programs has another advantage: due to advances in computational logic (automated theorem proving, satisfiability solving, model checking), nowadays much of this process can be supported by software . This book therefore accompanies its theoretical elaborations by practical demonstrations of various systems and tools that are based on or make use of the presented logical underpinnings.

Theoretical constructions are illustrated by examples that provide an intuitive understanding of the underlying ideas Many demonstrations of some software showing the practical applicability of the presented theory The book is accompanied by a web site that contains the source code of the demonstrations and examples for self-study

Autorentext
Wolfgang Schreiner is an associate professor at the Research Institute for Symbolic Computation (RISC) of the Johannes Kepler University Linz, Austria. He is working in formal methods of computer science (with previous research in parallel computing and functional programming), and has produced various software packages related to formal semantics, specification, and verification, in particular the RISC ProofNavigator, the RISC ProgramExplorer, and the RISC Algorithm Language (RISCAL). Formerly he directed a degree programme on Computer-based Learning at the Upper Austria University of Applied Sciences in Hagenberg.

Inhalt
Part I The Foundations.- Syntax and Semantics.- The Language of Logic.- The Art of Reasoning.- Building Models.- Recursion.- Part II The Higher Planes.- Abstract Data Types.- Programming Languages.- Computer Programs.- Concurrent Systems.- References.- Index.