Schnirelmann Density
The Schnirelmann density of a set of nonnegative integers is the greatest lower bound of the fractions A(n)/n where A(n) is the number of terms in the set <=n.
See also
Mann's Theorem, Schnirelmann's TheoremExplore with Wolfram|Alpha
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References
Khinchin, A. Y. "The Landau-Schnirelmann Hypothesis and Mann's Theorem." Ch. 2 in Three Pearls of Number Theory. New York: Dover, pp. 18-36, 1998.Referenced on Wolfram|Alpha
Schnirelmann DensityCite this as:
Weisstein, Eric W. "Schnirelmann Density." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/SchnirelmannDensity.html