The book "Mathematical Approaches to Software Quality" provides a comprehensive introduction to various mathematical approaches for ensuring high software quality. It is aimed at both students and professionals, conveying the mathematical foundations essential for sound software engineering. The authors discuss a variety of mathematical methods that are applicable in both academia and industry. Among the approaches covered are the Z specification language, the Vienna Development Method (VDM), the methods of Dijkstra and Hoare, as well as the Cleanroom process developed at IBM. Furthermore, the book addresses the transfer of these mathematical methods into industry. It places particular emphasis on how mathematical methods can be used to solve practical problems, thus offering valuable insights for software engineers.