General coordinate transformations for tensors

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SUMMARY

The discussion focuses on the transformation laws for tensors under general coordinate transformations, specifically for a tensor of type (0,1) and a tensor of type (2,1). The transformation formula for a (0,1) tensor is given as V_a' = ∂x^k/∂{x'}^a V_k, which describes how the tensor V_k transforms when changing coordinates. The second formula, x_a' = x_a'(x_b), represents the coordinate transformation itself. The first formula is derived from the second, confirming their interrelation in tensor transformation.

PREREQUISITES
  • Understanding of tensor types, specifically (0,1) and (2,1) tensors.
  • Familiarity with general coordinate transformations in differential geometry.
  • Knowledge of partial derivatives and their role in transformation laws.
  • Basic concepts of tensor calculus and its applications in physics and engineering.
NEXT STEPS
  • Study the transformation laws for (2,1) tensors in detail.
  • Learn about the implications of coordinate transformations in general relativity.
  • Explore the concept of covariant and contravariant tensors.
  • Investigate applications of tensor transformations in physics, particularly in continuum mechanics.
USEFUL FOR

This discussion is beneficial for students and professionals in mathematics, physics, and engineering who are working with tensor calculus and need to understand coordinate transformations in their applications.

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Homework Statement



Write down the transformation laws under general coordinate transformations for a
tensor of type (0,1) and a tensor of type (2,1) respectively

The Attempt at a Solution



I seem to have two transformation formulas but they could in fact just be the same thing. I'll just do the (0,1) tensor.

So, is the answer...

[tex]V_a' = \frac{\partial x^k}{\partial {x'}^a} V_k[/tex]

or is it

[tex]x_a' = x_a'(x_b)[/tex]

Or are these just the same thing?

This is probably a trivial question but just got to make sure
 
Last edited:
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The first formula you wrote describes how the tensor [tex]V_k[/tex] transforms under the change of coordinates in the 2nd formula. So the first formula is part of what you need to answer the question.
 

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