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cs.FL2009★ 15 cited
Pseudo-Power Avoidance
Ehsan Chiniforooshan, Lila Kari, Zhi Xu
Repetition avoidance has been studied since Thue's work. In this paper, we considered another type of repetition, which is called pseudo-power. This concept is inspired by Watson-C…
math.CO2009
A de Bruijn - Erdős theorem and metric spaces
Ehsan Chiniforooshan, Vašek Chvátal
De Bruijn and Erdős proved that every noncollinear set of n points in the plane determines at least n distinct lines. Chen and Chvátal suggested a possible generalization of this t…