What branches of math must I master to learn GR?

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Discussion Overview

The discussion revolves around the mathematical prerequisites necessary for learning General Relativity (GR). Participants explore various branches of mathematics, including linear algebra, abstract algebra, topology, and differential geometry, as well as the importance of understanding special relativity and Lagrangian mechanics.

Discussion Character

  • Exploratory
  • Technical explanation
  • Homework-related

Main Points Raised

  • One participant emphasizes the need to master linear algebra and suggests that abstract algebra may also be beneficial.
  • Another participant notes the importance of topology and differential geometry in the context of GR.
  • A participant mentions their current math background, which includes multi-variable calculus, basic linear algebra, differential equations, and some exposure to set theory and group theory.
  • One suggestion is to refer to Nakahara's book, which purportedly covers the necessary topics for mastering GR.
  • There is a mention of the importance of understanding special relativity and Lagrangian mechanics as prerequisites for studying GR.
  • Some participants express frustration with the suggestion to search the forum for previous answers, arguing that a general summary would be more efficient.

Areas of Agreement / Disagreement

Participants generally agree on the importance of certain mathematical subjects for learning GR, but there is no consensus on a definitive list or the best approach to acquiring this knowledge. Some participants challenge the efficiency of searching for previous discussions instead of providing direct answers.

Contextual Notes

Participants express varying levels of familiarity with the required mathematical concepts, and there are indications of differing opinions on the sufficiency of their current knowledge. The discussion does not resolve the best path forward for mastering the necessary mathematics.

Sorcerer
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Based on what I’ve read here, I really have to absolutely kill linear algebra. Maybe some abstract algebra, too. And based on all this talk of manifolds, I’m guessing some topology and differential geometry is in order.

Those of you who know GR, can you offer a math subject prescription so I can finally learn GR?

For the record my math background is currently maxed out here:
*Undergraduate multi-variable calculus

*The barest basics of linear algebra (before you get to more abstract concepts like really understanding vector spaces, basis, kernel, etc).

*Undergraduate differential equations up to some simple partial differential equations (I suppose the furthest I got is separation of variables and utilizing a Laplace transform table).

*A little bit of set theory, truth tables, and some of what you learn in the “Transition” math class undergraduates take before they are allowed to take courses like analysis, abstract algebra, topology and the like.

*A little exposure to group theory, and a couple other very watered down abstract algebra concepts.

Again, thanks to all who respond. I know this is kind of a vague question.
 
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I suggest a forum search. This question has been answered here many times.
 
phinds said:
I suggest a forum search. This question has been answered here many times.
(a) That isn’t very efficient as there are countless threads with those key words that only explore one particular issue rather than a simple general summary.

(b) It seems simply answering the question might have taken as much effort as “try the search forum.”
 
See e.g. Nakahara's book. It covers all the differential geometry, tensor analysis and topology you need to master GR.
 
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Sorcerer said:
Based on what I’ve read here, I really have to absolutely kill linear algebra. Maybe some abstract algebra, too. And based on all this talk of manifolds, I’m guessing some topology and differential geometry is in order.

Those of you who know GR, can you offer a math subject prescription so I can finally learn GR?

For the record my math background is currently maxed out here:
*Undergraduate multi-variable calculus

*The barest basics of linear algebra (before you get to more abstract concepts like really understanding vector spaces, basis, kernel, etc).

*Undergraduate differential equations up to some simple partial differential equations (I suppose the furthest I got is separation of variables and utilizing a Laplace transform table).

*A little bit of set theory, truth tables, and some of what you learn in the “Transition” math class undergraduates take before they are allowed to take courses like analysis, abstract algebra, topology and the like.

*A little exposure to group theory, and a couple other very watered down abstract algebra concepts.

Again, thanks to all who respond. I know this is kind of a vague question.

There are also some Physics prerequisites. Most important, you must have really understood SR. And, you need to have studied Lagrangian Mechanics. Another recent thread is here:

https://www.physicsforums.com/threa...s-for-general-relativity.939528/#post-5940112
 
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