Mathematical physics is concerned with developing mathematical methods to apply to problems in physics. It is a broad field that is distinguished by the blending of physics and pure mathematics. Its primary focus is on the expansion and explanation of physical theories. There are various branches of mathematical physics such as classical mechanics, partial differential equations, quantum theory, relativity, quantum relativistic theories and statistical mechanics. Fields like dynamical systems and Hamiltonian mechanics also belong to mathematical physics. This book provides comprehensive insights into the field of mathematical physics. While understanding the long-term perspectives of the topics, the book makes an effort in highlighting their impact as a modern tool for the growth of the discipline. Coherent flow of topics, student-friendly language and extensive use of examples make this book an invaluable source of knowledge.