A spline interpretation of Eulerian numbers
arXiv:0808.2349
Abstract
In this paper, we explore the interrelationship between Eulerian numbers and B splines. Specifically, using B splines, we give the explicit formulas of the refined Eulerian numbers, and descents polynomials. Moreover, we prove that the coefficients of descent polynomials are log-concave. This paper also provides a new approach to study Eulerian numbers and descent polynomials.
6 pages