On a new conjecture about super-monochromatic factorisations and ultimate periodicity
On a new conjecture about super-monochromatic factorisations and ultimate periodicity
复制标题
关于超单色因式分解和极限周期性的新猜想
DOI:
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发表时间:
2018
期刊:
影响因子:
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通讯作者:
Caius Wojcik
中科院分区:
文献类型:
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作者:
Caius Wojcik
We study a conjecture linking ultimate periodicity of infnite words to the existence of colorings on finite words avoiding monochromatic factorisation of suffixes, with the extra condition that the ordered concatenation of elements of this factorisation remains monochromatic. This type of results shows the limits of Ramsey theory in the context of combinatorics on words. We show some reductions of the problem and the example of the Zimin word. Using the new notion of consecutive length, we show that words avoiding large squares fulfill the conjecture.