Math Methods Question about triple product

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SUMMARY

The discussion centers on the application of the triple product in physics, specifically the relationships between vectors a, b, and c using cross and dot products. The calculations presented, including a' = [b x c]/[a*[(b x c)]] and its variations, demonstrate the conditions under which these vector operations yield non-zero results. The use of the Levi Civita symbol to establish these relationships is highlighted, indicating its relevance in advanced physics contexts such as reciprocal lattices.

PREREQUISITES
  • Understanding of vector operations, specifically cross product and dot product.
  • Familiarity with the Levi Civita symbol and its applications in tensor calculus.
  • Knowledge of linear algebra concepts, particularly in relation to vector spaces.
  • Basic principles of physics related to vector mechanics and their applications.
NEXT STEPS
  • Study the application of the Levi Civita symbol in advanced physics problems.
  • Research the concept of reciprocal lattices and their significance in solid-state physics.
  • Explore vector calculus techniques, focusing on triple products and their geometric interpretations.
  • Learn about the implications of non-zero results in vector operations in physical systems.
USEFUL FOR

This discussion is beneficial for physics students, mathematicians, and researchers interested in vector calculus and its applications in theoretical physics, particularly in areas involving advanced vector relationships and reciprocal lattices.

evlyn
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"when does this calculation come up in physics, and with what slight modification?"

a' = [b x c]/[a*[(b x c)]], b' = [c x a]/[a*[(b x c)]], c' = [a x b]/a*[(b x c)]]

a* (b x c) does not equal 0 (* is dot product and (x) is cross product)


2. Homework Equations
Show that:
x'*y = delta_xy, where x, y E{a,b,c}
a' * (b'xc') = [1]/a*[(b x c)]]
a =[b' x c']/a'*[(b' x c')]]


3. I was able to show those relationships using Levi Civita but have no idea where I would use this
 
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