How Does the Cross Product Relate to Rank 1 Tensors?

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SUMMARY

The discussion centers on proving that the vector product of two arbitrary vectors, ⃗A and ⃗B, results in a vector ⃗C that belongs to the Rank 1 tensor category. The relationship is defined by the equation C′i = λij Cj, where Ci is expressed as ϵij k Aj Bk and C′i as ϵijk A′j B′k. Participants emphasize the need for a clear understanding of the Levi-Civita symbol and tensor notation to effectively tackle the proof.

PREREQUISITES
  • Understanding of vector operations, specifically the vector product.
  • Familiarity with Rank 1 tensors and their properties.
  • Knowledge of the Levi-Civita symbol (ϵijk) and its applications in tensor calculus.
  • Basic proficiency in tensor notation and transformations.
NEXT STEPS
  • Study the properties of the Levi-Civita symbol in detail.
  • Learn about tensor transformations and their implications in physics.
  • Explore examples of Rank 1 tensors in various physical contexts.
  • Practice proving relationships involving vector products and tensors.
USEFUL FOR

This discussion is beneficial for physics students, mathematicians, and anyone studying tensor calculus or vector analysis, particularly those interested in the applications of tensors in physics.

zorrorojo
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Homework Statement


I don't know how to prove it.
Let us consider two arbitrary vectors
⃗ A and ⃗B.
Let us define the vector product of them as
⃗C = ⃗A × ⃗B
Show that the vector ⃗C belongs to the Rank 1 tensor. In other words,
prove that
C′i = λij Cj
where
Ci ≡ ϵij k Aj Bk
C′i ≡ ϵijk A′j B′k

Homework Equations


The Attempt at a Solution


I just tried, but I don't know about it.
 
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zorrorojo said:

The Attempt at a Solution


I just tried, but I don't know about it.

Hi zorrorojo, welcome to PF!:smile:

You'll need to be more specific than "I just tried, but I don't know about it" in order to get assistance here.

What exactly did you try? Show your attempt.
 
pls answer these qoestion:
1)expand the following
aibj ϵijk=
ϵjkl (du,l/dx,k)
 

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