Title of article :
On a discrete norm for polynomials
Author/Authors :
Fournier، نويسنده , , R. and Ruscheweyh، نويسنده , , S. and Salinas C.، نويسنده , , L.، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2012
Abstract :
Given n + 1 angles 0 ≤ θ 0 < θ 1 ⋯ < θ n ≤ π , we discuss various extremal problems over the class of polynomials P n endowed with the norm | p | n = max 0 ≤ j ≤ n | p ( e i θ j ) + p ( e − i θ j ) 2 | .
Keywords :
Discrete norms , Interpolation , Discrete type Bernstein and Markov inequalities
Journal title :
Journal of Mathematical Analysis and Applications
Journal title :
Journal of Mathematical Analysis and Applications
