3 ms·
It's clearly not exactly an exterior derivative. d(df) can't be seen as zero, since we will be dividing it by dx, and we will therefore need to retain things th
by impossiblefork 3y ago
It's clearly not exactly an exterior derivative. d(df) can't be seen as zero, since we will be dividing it by dx, and we will therefore need to retain things that would otherwise become infinitesimal.
- bikenaga 3y agoIf "d" isn't exterior derivative, I don't see how it's defined. I can't think of any other meaning "d" could have in the context of this discussion. Sorry, I'm just not understanding you - but thank you anyway for trying to explain your thinking.
- impossiblefork 3y agoIt's some kind of formal analogue where you can't drop all terms that become infinitesimal, sort of like a formal power series compared to an actual power series. So something like an exterior derivative where d(df) is not defined to be zero and such terms must be kept.