Found 57 Documents (Results 1–57)
Fourth order Hankel determinants for certain subclasses of modified sigmoid-activated analytic functions involving the trigonometric sine function. (English) Zbl 07917611
Second Hankel determinant of logarithmic coefficients of inverse functions in certain classes of univalent functions. (English) Zbl 1536.30030
An upper bound of the Hankel determinant of third order for the inverse of reciprocal of bounded turning functions. (English) Zbl 07897326
Second order Hankel determinants for class of bounded turning functions defined by Sălăgean differential operator. (English) Zbl 07884005
Fourth Hankel and Toeplitz determinants for bounded turning functions subordinate to \(1+\tanh z\). (English) Zbl 1539.30008
The sharp bound of the third Hankel determinant of the \(k^{th}\)-root transformation for bounded turning functions. (English) Zbl 1537.30015
Coefficient bounds for a family of analytic functions linked with a petal-shaped domain and applications to Borel distribution. (English) Zbl 1538.30063
The third-order Hermitian Toeplitz determinant for some classes of analytic functions. (English) Zbl 1526.30023
Sharp bounds of Hankel determinant for the inverse functions on a subclass of bounded turning functions. (English) Zbl 1510.30004
Hankel determinants of certain order for bounded turning functions of order alpha. (English) Zbl 1509.30010
The sharp upper bounds of the Hankel determinant on logarithmic coefficients for certain analytic functions connected with eight-shaped domains. (English) Zbl 1503.30046
Some sharp results on coefficient estimate problems for four-leaf-type bounded turning functions. (English) Zbl 1502.30067
Sharp bounds of the third Hankel determinant for classes of univalent functions with bounded turning. (English) Zbl 1513.30071
Reviewer: Agnieszka Wisniowska-Wajnryb (Rzeszów)
Hankel determinants of order four for a set of functions with bounded turning of order \(\alpha\). (English) Zbl 1492.30032
On a certain differential inequality and applications for generalized special functions. (English) Zbl 1499.30038
On the third and fourth Hankel determinants for a subclass of analytic functions. (English) Zbl 1483.30052
The sharp bound of the third Hankel determinant for functions of bounded turning. (English) Zbl 1476.30055
A class of analytic functions related to convexity and functions with bounded turning. (English) Zbl 1484.30033
Upper bound on Hankel determinant for bounded turning function associated with Sălăgean-difference operator. (English) Zbl 1470.30015
On third Hankel determinants for subclasses of analytic functions and close-to-convex harmonic mappings. (English) Zbl 1488.30132
Subordination inequalities of a new Salagean-difference operator. (English) Zbl 1417.30011
MSC:
30C45
Sufficient conditions for bounded turning of analytic functions. (English) Zbl 1419.30009
Ukr. Math. J. 70, No. 8, 1288-1299 (2019); and Ukr. Mat. Zh. 70, No. 8, 1118-1127 (2018).
Coefficient inequalities for bounded turning functions associated with conic domains. (English) Zbl 1409.30014
MSC:
30C45
Sharp estimates of generalized Zalcman functional of early coefficients for Ma-Minda type functions. (English) Zbl 1499.30073
Fourth Hankel determinant for the family of functions with bounded turning. (English) Zbl 1411.30009
Poles of Painlevé IV rationals and their distribution. (English) Zbl 1393.34082
Reviewer: Shun Shimomura (Yokohama)
Analytic functions defined by a product of expressions having geometric meaning. (English) Zbl 1424.30047
MSC:
30C45
The bounds of some determinants for functions of bounded turning of order alpha. (English) Zbl 1411.30016
MSC:
30C50
Fekete-Szegő problem for close-to-convex functions with respect to a certain convex function dependent on a real parameter. (English) Zbl 1348.30007
MSC:
30C45
Geometric properties of the complex Baskakov-Stancu operators in the unit disk. (English) Zbl 1412.30046
MSC:
30C45
On a new class of analytic functions derived by fractional differential operators. (English) Zbl 1324.30022
MSC:
30C45
Simple sufficient conditions for bounded turning. (English) Zbl 1303.30017
MSC:
30C45
Radius problem in classes of polynomial close-to-convex functions. I. (English) Zbl 1297.30023
MSC:
30C45
Subclasses of analytic functions defined by the inverses of certain integral operators. (English) Zbl 1289.30051
Upper bound for functions of bounded turning. (English) Zbl 1267.30042
Reviewer: Agnieszka Wisniowska-Wajnryb (Rzeszow)
MSC:
30C45
Argument estimate for non-Bazilevič type and bounded turning functions. (English) Zbl 1250.30012
MSC:
30C45
Mixed class of functions of non-Bazilevic type and bounded turning. (English) Zbl 1267.30041
Reviewer: Dorina Raducanu (Brasov)
MSC:
30C45
Extremal bounds for functions of bounded turning. (English) Zbl 1246.30025
MSC:
30C45
Some results on close-to-convex univalent functions. (English) Zbl 1246.30021
Reviewer: Nikola Tuneski (Skopje)
MSC:
30C45
On a subclass of starlike functions with bounded turning. (English) Zbl 1240.30056
Reviewer: Dorin Blezu (Sibiu)
MSC:
30C45
Partial sums of analytic functions of bounded turning with applications. (English) Zbl 1186.30012
MSC:
30C45
On a generalized class of analytic functions with bounded turning. (English) Zbl 1160.30323
MSC:
30C45
Generalized bounded boundary turning functions. (English) Zbl 1119.30008
MSC:
30C45
Partial sums of functions of bounded turning. (English) Zbl 1126.30304
Reviewer: O. Fekete (Freiburg)
Starlikeness of some integral operators defined on the class of bounded turning functions. (English) Zbl 0964.30005
MSC:
30C45
Approximation for the turning points of Bessel functions. (English) Zbl 0616.65016
Reviewer: C.L.Koul
Nonlinear boundary value problems with turning points and properties of difference schemes. (English) Zbl 0487.34067
Theory and applications of singular perturbations, Proc. Conf., Oberwolfach 1981, Lect. Notes Math. 942, 150-169 (1982).
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