TY - JOUR ID - 57721 TI - Polynomial Bounds for a Class of Univalent Function Involving Sigmoid Function JO - Khayyam Journal of Mathematics JA - KJM LA - en SN - AU - Fadipe-Joseph, Olubunmi A. AU - Kadir, Bilikis B. AU - Akinwumi, Sunday E. AU - Adeniran, Esther O. AD - Department of Mathematics, University of Ilorin, P.M.B. 1515 Ilorin, Nigeria. Y1 - 2018 PY - 2018 VL - 4 IS - 1 SP - 88 EP - 101 KW - Analytic function KW - Sigmoid function KW - Chebyshev polynomials KW - Sălăgean operator DO - 10.22034/kjm.2018.57721 N2 - In this work, a new subclass of univalent function was defined using the Sălăgean differential operator involving the modified sigmoid function and the Chebyshev polynomials. The coefficient bounds and the Fekete-Szego functional of this class were obtained using subordination principle. The results obtained agree and extend some earlier results. UR - https://www.kjm-math.org/article_57721.html L1 - https://www.kjm-math.org/article_57721_db05732ca68e42ed7238c4b1cd3b3338.pdf ER -