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Revista mexicana de física E
Print version ISSN 1870-3542
Abstract
PATINO, L. and SOHLE, J.. Sobre la naturaleza, tensorial o no tensorial, de los símbolos de Christoffel. Rev. mex. fís. E [online]. 2016, vol.62, n.1, pp.31-39. ISSN 1870-3542.
From the first approach to General Relativity we learn about the Christoffel symbols, and it is easy to notice that their coordinated components do not transform as a tensor. It is then confusing to find renowned books on the subject that refer to these symbols as if they were indeed a tensor. A prominent example of such a book is the one written by Rober Wald 1, which has been embraced as a textbook on the matter by a large amount of prestigious institutions around the globe. The simplest alternative would be to think that the books just mentioned provide a wrong description of the Christoffel symbols, but this is not the case. Understanding the mathematical foundation of why some authors treat the Christoffel symbols as a tensor provides valuable insight about the nature of the metric connection in General Relativity, and that is why in this paper we dedicate the space to provide the needed analysis. The discussion provided here is aimed to those that have already taken at least one class in General Relativity, hence some of the theoretical tools will be taken as known by the reader.
Keywords : General relativity; Christoffel symbols; tensors.