Portrait of Jacob Bernoulli (also known as James or Jacques) (1654 – 1705)
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Jacob Bernoulli was born #OTD in 1655.
He was an early proponent of Leibnizian calculus; along with his brother Johann, he was one of the founders of the calculus of variations. He also discovered the fundamental mathematical constant e. However, his most important contribution was in the field of probability, where he derived the first version of the law of large numbers in his work Ars Conjectandi.
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