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Three easy pieces (etudes for calculus and complex variables)
This talk described three unrelated topics in calculus: (1) how Vieta's formula for pi using nested square roots of 2 could be dramatically accelerated; (2) how the chain rule in calculus, for functions from R to R or C ... 
NewtonCotes Integration for Approximating Stieltjes (Generalized Euler) Constants
In the Laurent expansion ζ(s,α)= 1/(s1) + ∞ ∑ κ=0 (1)κγκ(α)/κ! (s1)κ, 0 < α ≤ 1 of the RiemannHurwitz zeta function, the coefficients γκ(α) are known as Stieltjes, or generalized Euler, constants. [When α = 1, ζ(s, 1) ...