I'm curious about the history of the integral.(adsbygoogle = window.adsbygoogle || []).push({});

I believe it was Leibniz who introduced the symbol [itex]\int[/itex]. But what did that meant for him besides anti-derivative (if anything)? For I am told it is Riemann who in a paper, introduced the know definition of the Riemann-Stieljes' integral in terms of partitions, upper and lower integral, and probably also the Riemann sum caracterisation. Some questions: who's Stieljes?Why is his name linked to that of Riemman? Who discovered the fundamental theorem?

So as you can see I'm very confused about all this. Please, tell me what's what? thx

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# History of the integral

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