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-   -   "outer" differentiation ? (http://www.physicsforums.com/showthread.php?t=14731)

 Creator Feb18-04 10:24 PM

"outer" differentiation ?

Can someone give me a clear explaination of what is meant by "outer" differentiation.

As for example, when we differentiate the vector potential, dA/dx, in order to arrive at the magnetic field, B, why would this be called an 'outer' differentiation??

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