Mathematician:John William Wrench, Jr.
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American mathematician working mainly in numerical analysis.
Pioneer of the use of computers for mathematical calculations
Best known now for his work with Daniel Shanks to calculate $\pi$ to $100 \, 000$ decimal places.
- Born: October 13, 1911 in Westfield, New York
- Died: February 27, 2009 in Frederick, Maryland
- 1952: A new calculation of Euler's constant (Mathematical Tables and Other Aids to Computation Vol. 6: p. 255) www.jstor.org/stable/2002275
- 1959: Khintchine's Constant (Amer. Math. Monthly Vol. 66, no. 5: pp. 276 – 279) (with Daniel Shanks) www.jstor.org/stable/2309633
- 1960: The evolution of extended decimal approximations to $\pi$ (The Mathematics Teacher Vol. 53: pp. 644 – 650)
- 1962: Calculation of $\pi$ to $100,000$ Decimals (Mathematics of Computation Vol. 16, no. 77: pp. 76 – 99) (with Daniel Shanks) www.jstor.org/stable/2003813
- Oct. 1971: Partial Sums of the Harmonic Series (Amer. Math. Monthly Vol. 78, no. 8: pp. 864 – 870) (with R.P. Boas, Jr.) www.jstor.org/stable/2316476
- 1974: Brun's Constant (Math. Comp. Vol. 28: pp. 293 – 299) (with Daniel Shanks) www.jstor.org/stable/2005836
- In order to assure the preservation of this document, I arranged for two clear copies of the output to be printed and specially bound (inscribed in gold letters) -- one of which I donated to the Smithsonian Institution in Washington, D.C.; the other I kept. The transfer to the Smithsonian took place at a small ceremony, attended by about 25 invited guests.