TURKISH JOURNAL OF MATHEMATICS, cilt.42, sa.4, ss.1927-1940, 2018 (SCI-Expanded)
In this paper our purpose is to find the upper bound estimate for the second Hankel determinant vertical bar a(2)a(4) - a(3)(2)vertical bar for functions defined by convolution belonging to the class N-sigma(mu,delta )(lambda, t) by using Chebyshev polynomials.