1 citations · 1 across the 2 of their papers we have counts for
2 papers
math.CO2011★ 1 cited
Finite Sholander Trees, Trees, and their Betweenness
Vašek Chvátal, Dieter Rautenbach, Philipp Matthias Schäfer
We provide a proof of Sholander's claim (Trees, lattices, order, and betweenness, Proc. Amer. Math. Soc. 3, 369-381 (1952)) concerning the representability of collections of so-cal…
math.CO2006
Problems related to a de Bruijn - Erdős theorem
Xiaomin Chen, Vašek Chvátal
De Bruijn and Erdős proved that every noncollinear set of n points in the plane determines at least n distinct lines. We suggest a possible generalization of this theorem in the fr…