Recent content by Qatawna blitz

I need to write chapter names as (Chapter One, Chapter Two,...) instead of (Chapter 1, Chapter 2, ...), how can I do that?

I think the two indicies uv in the answered lagrangian means variation with respect to guv It's in the textbook: Introducing Einstein's General Relativity "Ray d'Inverno" @haushofer

TL;DR Summary: How can I variate the quadratic Riemann curvature tensor, I tried raising and lowering the indices. Hi, Can you help me with this variation, I tried raising and lowering the indices. I tried for months every possible method to reach the following answer without success.