Intersection theorems with geometric consequences
- P. FranklAffiliated withC. N. R. S.
- , R. M. WilsonAffiliated withCalifornia Inst. Technology
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In this paper we prove that ifℱ is a family ofk-subsets of ann-set, μ0, μ1, ..., μs are distinct residues modp (p is a prime) such thatk ≡ μ0 (modp) and forF ≠ F′ ≠ℱ we have |F ∩F′| ≡ μi (modp) for somei, 1 ≦i≦s, then |ℱ|≦( s n ).
As a consequence we show that ifR n is covered bym sets withm<(1+o(1)) (1.2) n then there is one set within which all the distances are realised.
It is left open whether the same conclusion holds for compositep.
AMS subject classification (1980)05 C 65 05 C 35 05 C 15
- Intersection theorems with geometric consequences
Volume 1, Issue 4 , pp 357-368
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