Arithmetic Progression;
Distinct Color;
Color Class;
Acta Arith;
Consecutive Integer;
D O I:
10.1007/s00373-007-0723-2
中图分类号:
O1 [数学];
学科分类号:
0701 ;
070101 ;
摘要:
For infinitely many natural numbers n, we construct 4-colorings of [n] = {1, 2, ..., n}, with equinumerous color classes, that contain no 4-term arithmetic progression whose elements are colored in distinct colors. This result solves an open problem of Jungic et al. (Comb Probab Comput 12:599-620, 2003) Axenovich and Fon-der-Flaass (Electron J Comb 11:R1, 2004).
机构:
Ctr Math Sci, Dept Pure Math & Math Stat, Wilberforce Rd, Cambridge CB3 0WB, EnglandCtr Math Sci, Dept Pure Math & Math Stat, Wilberforce Rd, Cambridge CB3 0WB, England