What will be the 4th axis of a 3d curl?

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SUMMARY

The discussion centers on the concept of curl in vector calculus, specifically examining the relationship between 2D and 3D vectors. When calculating the curl of two 2D vectors, the result is a rotation about a third axis, while the curl of two 3D vectors indicates rotations in the x-y, y-z, and x-z planes with respect to the z, x, and y axes, respectively. The inquiry posed is whether a fourth dimension can be identified that encompasses the rotational dynamics of the entire x-y-z volume. The response clarifies that the two sets of vectors are fundamentally similar, as both 3D vectors reside within a common 2D plane, with the curl being perpendicular to that plane.

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malfoy23111995
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Suppose we have do a curl of two 2-d vectors... we get the 3rd axis about which it is rotating. But when we do the curl of two 3-d vectors.. we get a answer like x-y plane is rotating wrt z axis, y-z plane rotating wrt to x-axis and similarly x-z plane rotating wrt to y axis.
My question is, can't we find out the 4th dimension with respect to which all the x-y-z volume is rotating?
 
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Your "two 2-d vectors" and "two 3-d vectors" are actually the exact same thing. The two "3d vectors" lie in a common 2d plane, just as do you "2d" vectors, and then the curl is perpendicular to that plane, in the third dimension.
 

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