As per https://www.storyofmathematics.com/indian_madhava.html, mathematician Madhava who lived in what is present-day Kerala had propounded and documented many of the concepts of calculus that were "discovered" by Newton and others in Europe after centuries.
See https://www.storyofmathematics.com/indian_madhava.html
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Support for refutation 2
Refutation 2
Refutation 1
Medieval Indian mathematicians were far ahead of peers elsewhere in Asia or the West.
Madhava of India discovered Calculus before Newton and others in the West
Body of proof 1
Support for refutation 2
Body of refutation 2
Body of refutation 1
A whole lot, in fact the major deal, of mathematical developments in medieval India have been completely blacked out of public knowledge. See this twitter thread - https://twitter.com/i/moments/921689703056687105
As per https://www.storyofmathematics.com/indian_madhava.html, mathematician Madhava who lived in what is present-day Kerala had propounded and documented many of the concepts of calculus that were "discovered" by Newton and others in Europe after centuries.
See https://www.storyofmathematics.com/indian_madhava.html