Hi all.
My original question had to do with a problem of electrodynamics. I have not yet a clear answer but the support received has given me a broader perspective about the problem. Thank you all for your help.
Hi guys
Can anybody help me? What is the difference between a delta \delta W and a differential dW? (W a scalar function, for example.) In other words, when shold be used a delta and when a differential? Thanks.