Vol. 19, No. 2, 1966

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An inequality for the density of the sum of sets of vectors in n-dimensional space

Allen Roy Freedman

Vol. 19 (1966), No. 2, 265–267
Abstract

A Schnirelmann type density is defined for sets of “nonnegative” lattice points. If A, B and C = A + B are such sets with densities α, β and γ respectively, then it is shown that γ β∕(1 α) provided α + β < 1.

Mathematical Subject Classification
Primary: 10.63
Secondary: 10.45
Milestones
Received: 12 June 1965
Published: 1 November 1966
Authors
Allen Roy Freedman