%0 Journal Article
%T On unimodality problems in Pascal's triangle
%A Xun-Tuan Su
%A Yi Wang
%J Mathematics
%D 2008
%I arXiv
%X Many sequences of binomial coefficients share various unimodality properties. In this paper we consider the unimodality problem of a sequence of binomial coefficients located in a ray or a transversal of the Pascal triangle. Our results give in particular an affirmative answer to a conjecture of Belbachir et al which asserts that such a sequence of binomial coefficients must be unimodal. We also propose two more general conjectures.
%U http://arxiv.org/abs/0809.1579v1