Math Methods Question about triple product

In summary, the calculation a' = [b x c]/[a*[(b x c)]] is used in physics in the context of reciprocal lattice and can be modified slightly to show relationships such as x'*y = delta_xy. The condition a* (b x c) does not equal 0 is also relevant.
  • #1
evlyn
15
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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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Related to Math Methods Question about triple product

1. What is a triple product in math?

A triple product is a mathematical operation that involves three vectors or three quantities. It is also known as a scalar triple product or a vector triple product. It is used to determine the volume of a parallelepiped formed by the three vectors.

2. How do you calculate a triple product?

The formula for calculating a triple product is: (a x b) ⋅ c, where a, b, and c are three vectors. This can also be written as a ⋅ (b x c) or b ⋅ (c x a). You can also use the determinant method to calculate the triple product.

3. What is the significance of the triple product in math?

The triple product is significant because it helps in determining the volume of a parallelepiped and can also be used to find the angle between two vectors. It is also used in many physics and engineering applications, such as calculating moments of inertia and torque.

4. Can the triple product be negative?

Yes, the triple product can be negative. It depends on the orientation of the vectors involved. If the vectors form a right-handed coordinate system, the triple product will be positive. If they form a left-handed coordinate system, the triple product will be negative.

5. Are there any real-world applications of the triple product?

Yes, there are many real-world applications of the triple product. It is used in computer graphics to determine the orientation of 3D objects, in physics to calculate angular momentum, and in engineering to analyze stresses and strains in materials.

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