Joel Franklin is an Assistant Professor in the Physics department of Reed College. His work spans a variety of fields, including stochastic Hamiltonian systems (both numerical and mathematical), theoretical extensions of general relativity, and their observational implications.
'The style is informal and very readable, with detailed explanations, frequent summaries of what has been achieved and pointers to what is about to follow … The author negotiates the challenge between readability and technical accuracy with admirable skill, striking a balance that will be much appreciated by the target audience. … Overall, Franklin's book is an excellent addition to the literature, and its readability and explicitness will be appreciated by the target audience. Should I be teaching an introductory undergraduate class in general relativity in the near future, I would seriously consider this book for the main class text.' Classical and Quantum Gravity