Number of Natural Numbers Less than x which are Squares or Sums of Two Squares/Historical Note
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Historical Note on Number of Natural Numbers Less than x which are Squares or Sums of Two Squares
This theorem was demonstrated by Edmund Georg Hermann Landau in $1908$.
Srinivasa Aiyangar Ramanujan re-stated the theorem in a slightly different form.
Sources
- 1983: François Le Lionnais and Jean Brette: Les Nombres Remarquables ... (previous) ... (next): $0,764 \ldots$
- Weisstein, Eric W. "Landau-Ramanujan Constant." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Landau-RamanujanConstant.html