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Jørgen Pedersen Gram (June 27, 1850 - April 29, 1916) was a Danish mathematician who was born in Nustrup, Denmark and died in Copenhagen, Denmark.
Papers: On series expansions determined by the methods of least squares. Investigations of the number of primes less than a given number.
For number theorists his main fame is the series for the Riemann function (the leading function in Riemann's exact prime count formula). Instead of using a series of logarithmic integrals, Gram's function uses logarithm powers and the zeta function of positive integers. It has recently been supplanted by a formula of Ramanujan that uses the Bernoulli numbers directly instead of the zeta function.
Rama(x)=Gram(x)+Gram(1/x), any x>0 discovered by having both formulas programmed in UBASIC and noticing that some numbers looked awfully familiar
Struck and killed by a bicycle.
See also
- Gram-Schmidt process
- Riemann zeta function
- Bernoulli number
- Logarithmic integral function
- Prime number
- UBASIC