...as in this quotation: "Cauchy's approach to rigour didn't save him from errors, however. He 'proved' incorrectly that the limit of a convergent series of continuous functions is continuous. Abel produced a counterexample."
2026-04-04 15:08:01.1775315281
Who (which) was the mathematician "Abel" who countered Cauchy's "proof?"
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Most probably Niels Henrik Abel.
Wikipedia on uniform_convergence says:
Unfortunately, Wikipedia does not contain a reference to a publication by Abel on this.