Jacobian matrix generalization in coordinate transformation

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Discussion Overview

The discussion revolves around the generalization of the Jacobian matrix in coordinate transformations, particularly focusing on the transition from two-dimensional cases to higher dimensions. Participants express a desire for mathematical demonstrations and proofs that confirm the applicability of the Jacobian matrix in higher-dimensional contexts.

Discussion Character

  • Exploratory
  • Technical explanation
  • Mathematical reasoning

Main Points Raised

  • One participant questions the existence of proofs that ensure the Jacobian matrix's compatibility with higher dimensions, noting that most references focus on two-dimensional cases.
  • Another participant asks for clarification on which specific property of the Jacobian matrix is being sought for proof.
  • A participant mentions the use of the Jacobian determinant rule in changing coordinates during integrals and expresses uncertainty about how this rule extends to higher dimensions.
  • A later reply suggests that the proof of the 'change of variable formula for integrals using Jacobians' is complex and typically found in advanced vector calculus texts, providing a reference to a Stack Exchange Q&A for further exploration.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the existence of proofs for higher-dimensional Jacobians, and multiple viewpoints regarding the need for clarification and proof remain present.

Contextual Notes

Limitations include the lack of specific references to proofs for higher dimensions and the dependence on advanced mathematical texts for comprehensive understanding.

mertcan
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hi, I always see that jacobian matrix is derived for just 2 dimension ( ıt means 2x2 jacobian matrix) in books while ensuring the coordinate transformation. After that kind of derivation, books say that you can use same principle for higher dimensions. But, I really wonder if there is a proof which ensure that jacobian matrix is compatible with higher dimensions? I am asking because there are proofs which ensure the jacobian matrix only in 2 dimensions not higher dimensions.. Thanks in advance... I am looking forward to your mathematical demonstrations...
 
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Jacobian matrices have several useful properties.
For which one of those properties are you seeking a proof?
 
andrewkirk said:
Jacobian matrices have several useful properties.
For which one of those properties are you seeking a proof?
While doing integral in terms of space-time coordinates, and if you want to change coordinates, we should use jacobian matrix and determinant rule. I know the proof of why we should use jacobian determinant rule if there are 2 coordinates, but I do not know the proof of how this jacobian determinant rule fits with the higher dimensions or high order coordinates ?
 
I hope my question has become explicit after my last post...
 
Is there someone who can answer my question ? :D I am really looking forward to your answers ...
 
The proof you are seeking is that of the 'change of variable formula for integrals using Jacobians'. It is long and complex and I expect it will only appear in fairly advanced vector calculus texts.

This Stack Exchange Q&A gives an intuitive overview of the proof (in the first answer) and also contains a reference to a text in which the full proof can be found (in the last answer).
 

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