TY - JOUR AU - Baricz, Árpád AU - Ponnusamy, Saminathan TI - Starlikeness and convexity of generalized Bessel functions JF - INTEGRAL TRANSFORMS AND SPECIAL FUNCTIONS J2 - INTEGR TRANSF SPEC F VL - 21 PY - 2010 IS - 9 SP - 641 EP - 653 PG - 13 SN - 1065-2469 DO - 10.1080/10652460903516736 UR - https://m2.mtmt.hu/api/publication/1370063 ID - 1370063 AB - In this paper, we give sufficient conditions for the parameters of the normalized form of the generalized Bessel functions to be convex and starlike in the open unit disk. As an application of our main results, we solve a recent open problem concerning a subordination property of Bessel functions with different parameters. Moreover, we present a new inequality for the Euler gamma function, which we apply in order to have tight bounds for the generalized and normalized Bessel function of the first kind. LA - English DB - MTMT ER - TY - JOUR AU - Baricz, Árpád TI - Geometric properties of generalized Bessel functions JF - PUBLICATIONES MATHEMATICAE DEBRECEN J2 - PUBL MATH DEBRECEN VL - 73 PY - 2008 IS - 1-2 SP - 155 EP - 178 PG - 24 SN - 0033-3883 UR - https://m2.mtmt.hu/api/publication/1353021 ID - 1353021 LA - English DB - MTMT ER - TY - JOUR AU - Baricz, Árpád TI - Functional inequalities involving special functions. II. JF - JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS J2 - J MATH ANAL APPL VL - 327 PY - 2007 IS - 2 SP - 1202 EP - 1213 PG - 12 SN - 0022-247X DO - 10.1016/j.jmaa.2006.05.006 UR - https://m2.mtmt.hu/api/publication/1353027 ID - 1353027 AB - This paper is motivated by an open problem of Anderson, Vamanamurthy, and Vuorinen. We prove a chain of inequalities for hypergeometric functions, generalized and normalized Bessel functions, Kummer functions and for some general power series. Some particular cases and refinements are given. LA - English DB - MTMT ER - TY - JOUR AU - Baricz, Árpád TI - Some inequalities involving generalized Bessel functions JF - MATHEMATICAL INEQUALITIES & APPLICATIONS J2 - MATH INEQUAL APPL VL - 10 PY - 2007 IS - 4 SP - 827 EP - 842 PG - 16 SN - 1331-4343 UR - https://m2.mtmt.hu/api/publication/1353028 ID - 1353028 LA - English DB - MTMT ER - TY - JOUR AU - Baricz, Árpád TI - Functional inequalities involving special functions JF - JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS J2 - J MATH ANAL APPL VL - 319 PY - 2006 IS - 2 SP - 450 EP - 459 PG - 10 SN - 0022-247X DO - 10.1016/j.jmaa.2005.06.052 UR - https://m2.mtmt.hu/api/publication/1353026 ID - 1353026 LA - English DB - MTMT ER -