Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Arthur John Robin Gorell Milner FRS FRSE (Robin Milner or A.J.R.G. Milner, born 13 January 1934 near Plymouth) is a prominent British computer scientist. Milner is generally regarded as having made three major contributions to computer science. He developed LCF, one of the first tools for automated theorem proving. The language he developed for LCF, ML, was the first language with polymorphic type inference and type-safe exception handling. In a very different area, Milner also developed a theoretical framework for analyzing concurrent systems, the calculus of communicating systems (CCS), and its successor, the pi-calculus. He is currently working on bigraphs, a formalism subsuming CCS and the pi-calculus.