Abstract. A theorem of De Bruijn concerning Lp inequalities for polynomials is extended to a class of lacunary type polynomials for every p > 0. Also a generalization of this result to the s-th derivative of polynomials not vanishing in the disk |z| < k where k 1 is obtained.
1991 Mathematics Subject Classification. 41A27.
Key words and phrases. Polynomials, Lp mean estimates.