Introduction to General Relativity

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The book presents a comprehensive introduction to special and general relativity using the Lagrangian formalism and the principle of least action, emphasizing a foundational approach rooted in a few key assumptions. It starts with a review of Newtonian mechanics and gravity, progressing into relativistic concepts. Step-by-step calculations mimic classroom instruction, enhancing understanding. Additionally, the text explores recent developments in gravitational wave astronomy and outlines current research trends in gravity, accompanied by examples and problems for practice.