This book provides a textbook introduction to the B-Method, a rigorous methodology for the development of correct software. The text covers all stages of the B software development process - from specification, through refinement and design, down to implementation and automatic code generation. The method uses a single uniform notation throughout development, designed to enable verification at each stage whilst placing particular emphasis on correctness. * Suitable for undergraduate and postgraduate courses on formal methods and software development * Written in a clear tutorial style of explanation * Contains numerous illustrative examples, exercises and self-testing questions with solutions throughout * Relevant to users of any B-Method CASE tool * Associated teaching materials to be found at www.palgrave.com/resources The B-Method : An Introduction also offers readers powerful tool support by providing a free licence for the B-Toolkit - an integrated toolset which supports and extends the entire B development lifecycle.