Juma, Abdul Rahman S.; Al-Khafaji, Saba N.; Engel, Olga Chebyshev polynomials for certain subclass of Bazilević functions associated with Ruscheweyh derivative. (English) Zbl 1488.30084 Kragujevac J. Math. 45, No. 2, 173-180 (2021). MSC: 30C45 30C50 PDFBibTeX XMLCite \textit{A. R. S. Juma} et al., Kragujevac J. Math. 45, No. 2, 173--180 (2021; Zbl 1488.30084) Full Text: Link
Irmak, Hüseyin; Engel, Olga Some results concerning the Tremblay operator and some of its applications to certain analytic functions. (English) Zbl 1439.30026 Acta Univ. Sapientiae, Math. 11, No. 2, 296-305 (2019). MSC: 30C45 26A33 PDFBibTeX XMLCite \textit{H. Irmak} and \textit{O. Engel}, Acta Univ. Sapientiae, Math. 11, No. 2, 296--305 (2019; Zbl 1439.30026) Full Text: DOI
Bulut, Serap; Engel, Olga The radius of starlikeness, convexity and uniform convexity of the Legendre polynomials of odd degree. (English) Zbl 1412.30029 Result. Math. 74, No. 1, Paper No. 48, 9 p. (2019). MSC: 30C45 PDFBibTeX XMLCite \textit{S. Bulut} and \textit{O. Engel}, Result. Math. 74, No. 1, Paper No. 48, 9 p. (2019; Zbl 1412.30029) Full Text: DOI
Chung, Yao Liang; Engel, Olga Certain properties of the generalized Mittag-Leffler function. (English) Zbl 1395.30016 Electron. J. Math. Anal. Appl. 6, No. 2, 288-294 (2018). MSC: 30C45 PDFBibTeX XMLCite \textit{Y. L. Chung} and \textit{O. Engel}, Electron. J. Math. Anal. Appl. 6, No. 2, 288--294 (2018; Zbl 1395.30016)
Páll-Szabó, Ágnes Orsolya; Engel, Olga; Szatmári, Eszter Certain class of analytic functions with varying arguments defined by the convolution of Sălăgean and Ruscheweyh derivative. (English) Zbl 1413.30085 Acta Univ. Apulensis, Math. Inform. 51, 61-74 (2017). MSC: 30C45 PDFBibTeX XMLCite \textit{Á. O. Páll-Szabó} et al., Acta Univ. Apulensis, Math. Inform. 51, 61--74 (2017; Zbl 1413.30085) Full Text: DOI
Engel, Olga; Juma, Abdul Rahman S. The sharp version of a strongly starlikeness condition. (English) Zbl 1387.30009 Acta Univ. Sapientiae, Math. 9, No. 2, 283-290 (2017). MSC: 30C45 30C80 PDFBibTeX XMLCite \textit{O. Engel} and \textit{A. R. S. Juma}, Acta Univ. Sapientiae, Math. 9, No. 2, 283--290 (2017; Zbl 1387.30009) Full Text: DOI
Engel, Olga On a class of analytic functions defined by the Sălăgean integral operator. (English) Zbl 1399.30044 An. Univ. Oradea, Fasc. Mat. 24, No. 2, 9-14 (2017). MSC: 30C45 PDFBibTeX XMLCite \textit{O. Engel}, An. Univ. Oradea, Fasc. Mat. 24, No. 2, 9--14 (2017; Zbl 1399.30044)
Engel, Olga; Páll-Szabó, Orsolya Ágnes Preserving properties of the generalized Bernardi-Libera-Livingston integral operator defined on some subclasses of starlike functions. (English) Zbl 1387.30010 Konuralp J. Math. 5, No. 2, 207-215 (2017). MSC: 30C45 PDFBibTeX XMLCite \textit{O. Engel} and \textit{O. Á. Páll-Szabó}, Konuralp J. Math. 5, No. 2, 207--215 (2017; Zbl 1387.30010)
Engel, O.; Páll-Szabó, Á. O. The radius of convexity of particular functions and applications to the study of a second order differential inequality. (English) Zbl 1372.30006 J. Contemp. Math. Anal., Armen. Acad. Sci. 52, No. 3, 118-127 (2017) and Izv. Nats. Akad. Nauk Armen., Mat. 52, No. 3, 16-29 (2017). MSC: 30C45 PDFBibTeX XMLCite \textit{O. Engel} and \textit{Á. O. Páll-Szabó}, J. Contemp. Math. Anal., Armen. Acad. Sci. 52, No. 3, 118--127 (2017; Zbl 1372.30006) Full Text: DOI
Engel, Olga On the composition of two starlike functions. (English) Zbl 1413.30054 Acta Univ. Apulensis, Math. Inform. 48, 47-53 (2016). MSC: 30C45 PDFBibTeX XMLCite \textit{O. Engel}, Acta Univ. Apulensis, Math. Inform. 48, 47--53 (2016; Zbl 1413.30054)
Engel, Olga; Chung, Yao Liang About a class of analytic functions defined by Noor-Sălăgean integral operator. (English) Zbl 1382.30026 J. Math. Appl. 39, 59-67 (2016). MSC: 30C45 PDFBibTeX XMLCite \textit{O. Engel} and \textit{Y. L. Chung}, J. Math. Appl. 39, 59--67 (2016; Zbl 1382.30026)
Engel, Olga; Szász, Róbert On a subclass of convex functions. (English) Zbl 1389.30046 Stud. Univ. Babeș-Bolyai, Math. 61, No. 2, 137-146 (2016). MSC: 30C45 PDFBibTeX XMLCite \textit{O. Engel} and \textit{R. Szász}, Stud. Univ. Babeș-Bolyai, Math. 61, No. 2, 137--146 (2016; Zbl 1389.30046)
Acu, Mugur; Engel, Olga; Szász, Róbert Preserving properties of the generalized Bernardi integral operator defined on a class of analytic functions with varying arguments. (English) Zbl 1364.30032 Indian J. Math. 58, No. 3, 311-321 (2016). MSC: 30C99 30C45 PDFBibTeX XMLCite \textit{M. Acu} et al., Indian J. Math. 58, No. 3, 311--321 (2016; Zbl 1364.30032)
Engel, Olga; Kupán, Pál A.; Páll-Szabó, Ágnes O. About the radius of convexity of some analytic functions. (English) Zbl 1389.30045 Creat. Math. Inform. 24, No. 2, 155-161 (2015). MSC: 30C45 PDFBibTeX XMLCite \textit{O. Engel} et al., Creat. Math. Inform. 24, No. 2, 155--161 (2015; Zbl 1389.30045)
Páll-Szabó, Ágnes Orsolya; Engel, Olga Properties of certain class of analytic functions with varying arguments defined by Ruscheweyh derivative. (English) Zbl 1332.30027 Acta Univ. Sapientiae, Math. 7, No. 2, 278-286 (2015). MSC: 30C45 30C80 PDFBibTeX XMLCite \textit{Á. O. Páll-Szabó} and \textit{O. Engel}, Acta Univ. Sapientiae, Math. 7, No. 2, 278--286 (2015; Zbl 1332.30027) Full Text: DOI