2019/04/26 by Erdélyi, Tamás · 1 citation
#41A17 #Complex Variables (math.CV) #FOS: Mathematics
paper · doi:10.48550/arxiv.1904.11887
We give a simple, elementary, and at least partially new proof of Arestov's famous extension of Bernstein's inequality in Lp to all p ≥ 0. Our crucial observation is that Boyd's approach to prove Mahler's inequality for algebraic polynomials Pn ∈ \mathcal Pnc can be extended to all trigonometric polynomials Tn ∈ \mathcal Tnc.