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Fifth Hankel Determinant for Multivalent Bounded Turning Functions of Order
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The objective of this paper is to estimate an upper bound for the third, fourth and fifth Hankel determinants for the class of multivalent holomorphic functions, whose derivative has a positive real part of order α(0 ≤ α < 1). Further we investigate bound for 2-fold symmetric functions.
Keywords
Holomorphic Function, Upper Bound, Hankel Determinant, Carath´eodory Function.
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