269KiB, 903x986, Georg_Friedrich_Bernhard_Riemann.jpg View SameGoogleiqdbSauceNAO Riemann Sum Anonymous Mon 07 Oct 18:12:24 2019 No.11039787 ViewReplyOriginalReport Quoted By: >>11039789 >>11039796 Why has nobody solved it yet? How much work needs to be put into it?