Marx’s Mathematical Manuscripts - Help understanding derivatives
So I found out about Marx' mathematical manuscripts, so I say "Hey, I've been studying mathematics this year at university. I understand limits and derivatives, maybe I can understand something of that gibberish." So I see the titles and the one called "On the Concept of the Derived Function", I go there and I see some notation I don't understand, he speaks about things I'm not clearly understanding, so maybe some of you could make it clear. For example: ![]( Why is this x sub 1 notation? Is this some other way to write derivatives? Because on the footnotes it says this: > 2. In order to avoid confusion with the designation of derivatives, Marx’s notation x´, y´, ... for the new values of the variable has been replaced here and in all similar cases by x1, y1, ... Then I saw a talk about Marx's mathematics and the infinitesimal and some of that stuff, but the one who was speaking didn't went much into the mathematical part but was more like a history talk on how the Chinese were interested in the propositions of Marx because it liberated calculus from the idealist veil with which it was conceived by Leibniz and Newton, but the one who was talking mentioned Marx learning mathematics with whatever he had around and didn't managed to read Cauchy so we was like "Yeah this is nice but it's al shit now we have proved it fully works." But well, he seems a bit biased, since he's a Usonian, so maybe Marx's writings are still relevant, I don't even know who the fuck Cauchy is, so yeah, help. Text:

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