Correction to: C. Bambi, Introduction to General Relativity, Undergraduate Lecture Notes in Physics, https://doi.org/10.1007/978-981-13-1090-4

In the original version of this book, equations and paragraphs in the following sections were corrected. Sections 1.2, 4.6.1, 7.3, 8.5, 8.6.2, 9.5, 12.5.2, I.2 and I.4.

The erratum book has been updated with the changes.