%0 Journal Article
%T A NEW LOOK AT THE LYAPUNOV INEQUALITY
%A Constantin P. Niculescu
%J Mathematics and its Applications : Annals of the Academy of Romanian Scientists
%D 2011
%I Academy of Romanian Scientists Publishing House
%X Given a Banach space E, it is proved that any function u in C2([a; b];E) verifies a Lyapunov inequality. The provided constant is sharp. Several applications are included.
%K Sturm-Liouville problem
%K function of bounded variation
%K differentiable function
%U http://www.mathematics-and-its-applications.com/preview/july2011/data/12_niculescu.pdf