Convolutions Of Certain Classes Of Analytic Functions With Negative Coefficients

Convolutions Of Certain Classes Of Analytic Functions With Negative Coefficients

Let f (z) — z co S n = 2 0 and g (z) — z — 00 s b. tt=2 bn —> 0. We investi- gate some properties of h (z) — f (z} 00 s wbere f (z) and g (z) n=2 satisfy either Re(f(z) / z) Re (g(z)/ z) ly. or Re £'« a for |z| 1.

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