Can the Jacobian of an Inverse Transformation Prove to be 1?

Click For Summary
SUMMARY

The discussion centers on the relationship between the Jacobian of a transformation and its inverse, specifically addressing the transformations T from (p,q) to (u,v) and T^{-1} from (u,v) to (p,q). The Jacobian J(T) is defined as u_{p}v_{q} - u_{q}v_{p}, while J(T^{-1}) is defined as p_{u}q_{v} - p_{v}q_{u}. The participants clarify that the product of the Jacobians, |J(T)J(T^{-1})|, should equal 1, contradicting the initial assertion that it equals 0. This highlights the necessity of correctly applying the properties of Jacobians in transformations.

PREREQUISITES
  • Understanding of Jacobian matrices and their properties
  • Familiarity with inverse functions in multivariable calculus
  • Knowledge of transformation techniques in coordinate systems
  • Basic proficiency in differential calculus
NEXT STEPS
  • Study the properties of Jacobians in multivariable calculus
  • Explore the concept of inverse transformations in detail
  • Learn about the application of Jacobians in change of variables
  • Investigate examples of transformations and their Jacobians in various coordinate systems
USEFUL FOR

Mathematicians, students of multivariable calculus, and anyone interested in the applications of Jacobians in transformations and inverse functions.

jakey
Messages
51
Reaction score
0
Hi guys, let's say I have a transformation T from (p,q) to (u,v). The inverse transformation would be T^{-1} from (u,v) to (p,q)

Now, J(T) = u_{p}v_{q} - u_{q}v_{p}. On the other hand, J(T^{-1})= p_{u}q_v - p_{v}q_{u}. But |J(T)J(T^{-1})| = 0 and not equal to 1. I know it's supposed to be 1 but how do you show it using this way?

thanks!
 
Physics news on Phys.org
Oh by the way, J here refers to the jacobian.
 

Similar threads

  • · Replies 1 ·
Replies
1
Views
1K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 17 ·
Replies
17
Views
2K
  • · Replies 12 ·
Replies
12
Views
2K
  • · Replies 11 ·
Replies
11
Views
1K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 10 ·
Replies
10
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K