What Are the Utilities of Interior and Exterior Products?

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SUMMARY

The discussion focuses on the utilities of the Interior and Exterior Products in geometry and physics. The Interior Product is defined as a method to extract a component of a vector, such as a force, in a specific direction. In contrast, the Exterior Product is utilized to combine vectors, exemplified by the interaction of electromagnetic forces and position vectors, resulting in a 3-form whose dual is a 1-form representing force.

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  • Knowledge of electromagnetic theory
  • Basic geometry concepts
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Hi Jhenrique! :smile:

The interior product is pretty much the same as in ordinary geometry …

it gives the component (of, say, a force) in a particular direction.​

The exterior product is useful for combining eg two forces or a force and a position …

eg the exterior product of the 2-form (E;B) electromagnetic force with the 1-form r position is the 3-form (E;B) ##\wedge## r whose dual is the 1-form force. :wink:
 

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