Adam Bobrowski is a professor and Chairman of the Department of Mathematics at Lublin University of Technology, Poland. He is a pure mathematician who uses the language of operator semigroups to describe stochastic processes. He has authored and co-authored nearly 70 papers on the subject, and five books, including Functional Analysis for Probability and Stochastic Processes (2005) and Convergence of One-Parameter Operator Semigroups (2016).

A non-technical introduction; 1. A guided tour through the land of operator semigroups; 2. Generators versus intensity matrices; 3. Boundary theory: core results; 4. Boundary theory continued; 5. The dual perspective; Solutions and hints to selected exercises; Commonly used notations; References; Index.