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A remark on translated sets

Published online by Cambridge University Press:  24 October 2008

D. B. Sawyer
Affiliation:
University of Otago DunedinNew Zealand
F. Smithies
Affiliation:
University of Otago DunedinNew Zealand

Extract

Let Λ denote the integral lattice in n-dimensional Euclidean space. A classical theorem of Minkowski's states that any bounded closed convex region K symmetrical in the origin 0 and with volume 2n contains a point of Λ other than 0. There will be a lattice point other than 0 in the interior of K except when K has certain forms, of which we will denote an arbitrary one by K*. An example of a K* is the cube |xi| ≤ 1 (i = 1, 2,..., n), and more generally a famous theorem of Hajós (3) states that if K* is a parallelepiped it is defined (except for integral unimodular transformations of the x's) by inequalities of the form |x1| ≤ 1, |a21x1 + x2| ≤ 1, …, |an1x1 + … + an, n-1xn-1+xn| ≤ 1.

Type
Research Notes
Copyright
Copyright © Cambridge Philosophical Society 1956

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References

REFERENCES

(1)Blichfeldt, H. F.Trans. Amer. math. Soc. 15 (1914), 227–35.Google Scholar
(2)Bonnesen, T. and Fenchel, W.Konvexe Körper (Berlin, 1934).Google Scholar
(3)Hajós, G.Math. Z. 47 (1942), 427–67.Google Scholar