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A new family of series expansions for $1/π$ and a binomial identity (1907.03188v1)
Published 6 Jul 2019 in math.NT and math.CA
Abstract: A doubly infinite set of series expansion for $1/\pi$ are reported. They follow trivially from a formal expansion for the quotient of the values taken by the gamma function for two (complex) arguments differing by an integer plus one half, obtained by an alternative computation of the Wronskian of the modified Bessel functions. The same formal expansion allows to discover also a new binomial identity.
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