Straub, Armin Max Planck Institute for Mathematics, Max Planck Society;
Zudilin, Wadim Max Planck Institute for Mathematics, Max Planck Society;
https://doi.org/10.1016/j.jat.2014.05.012 (Publisher version)
Straub_Positivity_oa_2015.pdf (Any fulltext), 207KB
Straub, A., & Zudilin, W. (2015). Positivity of rational functions and their diagonals. Journal of Approximation Theory, 195, 57-69. doi:10.1016/j.jat.2014.05.012.