no he created the laws of force
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Calculus
No, Newton and Leibniz independently developed calculus.
Newton and Leibniz
No, Einstein did not invent calculus, Isaac Newton did. Liebniz did as well at around the same time and there was a major debate on who invented calculus first, but I think the more popular answer is Isaac Newton. Put Leibniz–Newton calculus controversy into wiki for an artcile about this debate.
Everything but notation. Newton calculus is a little under developed because of its once scarce use.