Textbook in PDF format

New Edition of "The Mathematical Theory of Relativity" by Arthur Stanley Eddington, originally published in 1923. This edition is furnished by "Editor's Foreword" by Tigran Aivazian. This work was originally based on the LaTeX source code which was produced by professor of mathematics at College of the Holy Cross Andrew D. Hwang and made available under Public Domain at Project Gutenberg at: https://www.gutenberg.org/ebooks/59248 As it was based on the old (1923) edition, T. Aivazian has edited the sources to bring the text in line with the latest additions and corrections made in 1924 and also carefully compared it with the translation to Russian, published in Odessa in 1934, which was also based on the 1924 English edition. The source code of the present book is freely available on github at https://github.com/tigran123/mtor
Elementary Principles
The Tensor Calculus
The Law of Gravitation
Relativity Mechanics
Curvature of Space and Time
Electricity
World Geometry