Certain Classes of Harmonic Multivalent Functions Based on Hadamard Product
نویسندگان
چکیده
A continuous function f u iv is a complex-valued harmonic function in a complex domain C if both u and v are real harmonic inC. In any simply connected domainD ⊆ C, we canwrite f h g, where h and g are analytic in D. We call h the analytic part and g the co-analytic part of f . Note that f h g reduces to h if the coanalytic part g is zero. For p ≥ 1, denote by H p the set of all multivalent harmonic functions f h g defined in the open unit disc U, where h and g defined by
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