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ergospherical
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I don't agree with that. If ##f## is a ##C^{\infty}## function (0-form) then its exterior derivative ##df## really is just the differential of ##f##.PeterDonis said:You believe incorrectly, as I have already said. In ordinary calculus, ##dx## just means an infinitesimal interval of the variable ##x##, which is taken to zero in the limit. It is a completely different concept from the exterior derivative of a function.