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Do we really need concept of cross product at all? I always believed cross product to be sort of simplification of exterior product concept tailored for the 3D case. However, recently I encountered the following sentence «...but, unlike the cross product, the exterior product is associative». (https://en.wikipedia.org/wiki/Exterior_algebra) and it occurred to me that I might have been missing something.
Two remarks:
1) Clearly cross product is tied to 3D world and exterior product works for space of any dimension. Suppose we are considering 3D case only.
2) The cross product can be convenient tool. Being such it has every right to exist. But I am asking about whether it could be dropped entirely in favour of its exterior counterpart without losing anything in principle.
Two remarks:
1) Clearly cross product is tied to 3D world and exterior product works for space of any dimension. Suppose we are considering 3D case only.
2) The cross product can be convenient tool. Being such it has every right to exist. But I am asking about whether it could be dropped entirely in favour of its exterior counterpart without losing anything in principle.