History of Science and Mathematics Beta

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Answer a question more than 60 days later with score of 5 or more. This badge can be awarded multiple times.

earned this badge 4 times.
Who introduced the notation $y|_{x=a}$?
Awarded Jan 20 at 22:18
Who introduced random variables into probability?
Awarded Jun 10 '19 at 7:15
Who invented the Leibnitz notation $\frac{d^2y}{dx^2}$ for the *second* derivative?
Awarded Feb 23 '19 at 3:40
$\frac{dy}{dx}$ versus $\frac{{\mathrm d}y}{{\mathrm d}x}$
Awarded Mar 1 '18 at 1:19

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