منابع مشابه
Generalizing Wallis' Formula
The present note generalizes Wallis’ formula, 2 = . 7 6 . 5 6 . 5 4 . 3 4 . 3 2 . 1 2 , using the EulerMascheroni constant g and the Glaisher-Kinkelin constant A: 2 ln 2 4 = 3 3 2 . 1 2 . 5 4 3 4
متن کاملGeoffrey Jefferson 1886-1961.
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متن کاملWallis-Ramanujan-Schur-Feynman
One of the earliest examples of analytic representations for π is given by an infinite product provided by Wallis in 1655. The modern literature often presents this evaluation based on the integral formula 2 π ∫ ∞ 0 dx (x + 1) = 1 2 (
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Due to network effects and switching costs, platform providers often become entrenched. To dislodge them, entrants generally must offer revolutionary products. We explore a second path to platform leadership change that does not rely on Schumpeterian creative destruction: platform envelopment. By leveraging common components and shared user relationships, one platform provider can move into ano...
متن کاملWallis Inequality with a Parameter
We introduce a parameter z for the well-known Wallis’ inequality, and improve results on Wallis’ inequality are proposed. Recent results by other authors are also improved.
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ژورنال
عنوان ژورنال: Psychiatric Bulletin
سال: 1999
ISSN: 0955-6036,1472-1473
DOI: 10.1192/pb.23.12.762