Srivastava, Hari M.2022-12-232022-12-232018Srivastava, H. M. vd. (2018). ''Hankel determinant for a subclass of Bi-univalent functions defined by using a symmetric q-derivative operator''. Filomat, 32(2), 503-516.0354-5180http://www.doiserbia.nb.rs/img/doi/0354-5180/2018/0354-51801802503S.pdfhttps://doi.org/10.2298/FIL1802503Shttp://www.doiserbia.nb.rs/Article.aspx?ID=0354-51801802503S#.Y43hSnZByM8http://hdl.handle.net/11452/30070In this paper, we discuss the various properties of a newly-constructed subclass of the class of normalized bi-univalent functions in the open unit disk, which is defined here by using a symmetric basic (or q-) derivative operator. Moreover, for functions belonging to this new basic (or q-) class of normalized biunivalent functions, we investigate the estimates and inequalities involving the second Hankel determinant.eninfo:eu-repo/semantics/openAccessAnalytic functionsUnivalent functionsBi-univalent functionsHankel determinantFekete-Szego functionalQ-DerivativeCoefficent boundsGeneral subclassStarlikeMathematicsArticle0004384945000122-s2.0-85048020011503516322Mathematics, appliedMathematicsUnivalent Functions; Coefficient Estimates; Subclasses