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We introduce new classes MHkσ,s(λ,δ,α) and M¯Hkσ,s(λ,δ,α) of harmonic univalent functions with respect to k-symmetric points defined by differential operator. We determine a sufficient coefficient condition, representation theorem, and distortion theorem

international journal of mathematics and mathematical sciences

On Harmonic Functions Defined by Differential Operator with Respect to<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mrow><mml:mi>k</mml:mi></mml:mrow></mml:math>-Symmetric Points

On Harmonic Functions Defined by Differential Operator with Respect tok-Symmetric Points