Let K be a finite set of lattice points in a plane. We prove that if |K| is sufficiently large and |K+K| < (4 - 2/s)|K| - (2s-1), then there exist s - 1 parallel lines which cover K. We also obtain some more precise structure theorems for the cases s = 3 and s = 4.
@article{bwmeta1.element.bwnjournal-article-aav83i2p127bwm, author = {Yonutz Stanchescu}, title = {On the structure of sets with small doubling property on the plane (I)}, journal = {Acta Arithmetica}, volume = {84}, year = {1998}, pages = {127-141}, zbl = {0885.11018}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-aav83i2p127bwm} }
Yonutz Stanchescu. On the structure of sets with small doubling property on the plane (I). Acta Arithmetica, Tome 84 (1998) pp. 127-141. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-aav83i2p127bwm/
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