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Theres no sense calling the vector (1, 2, 5) is positive but (1, 2, 5) is negative (although the right-hand rule could theoretically make that...
Theres no sense calling the vector (1, 2, 5) is positive but (1, 2, 5) is negative (although the right-hand rule could theoretically make that distinction for us: wed read the sign off from the last coordinate only. But lets not make things harder than they need to be, ok?). When referring to the extended tensors T e , we shall just drop the e from now on and understand that if one has an argument of the wrong type, we mean that we have to use the extended operator.27 Now that we have described the algebra of what happens---after the dust settles one can see such a thing really is simple (yes, I know that is hard to believe right now, but youll see eventually). . . how about the geometry of the situation?
