... αb1⊂fnU.3.44. Convolution, convex combination, and extreme points In this section, we show that the class MHn, λ, α is invariant under convolution and convexcombination of its member.For harmonic ... the original work is properly cited.1. IntroductionA continuous function f u iv is a complex-valued harmonic function in a complex domainC if both u and v are real harmonic in C. In any ... −∞k2|ak|zk,gnz−1n∞k1|bk|zk and n ∈ N0.Coefficient conditions, such as distortion bounds, convolution con-ditions, convex combination, extreme points, and neighborhood for the class M––Hn, λ, α,areob-tained.Copyright...