ABSTRACT
Jackson’s Inequality Let f : R → R be continuous and of period 2π then
||f − Tn||∞ ≤ Cω(f ;n−1), (1) where Tn is the set of all trigonometric polynomials of degree n, ω is the modulus of continuity, and C is an absolute constant.
Jackson’s Inequality Let f : R → R be continuous and of period 2π then
||f − Tn||∞ ≤ Cω(f ;n−1), (1) where Tn is the set of all trigonometric polynomials of degree n, ω is the modulus of continuity, and C is an absolute constant.