Found 139 Documents (Results 1–100)
Fourth Hankel and Toeplitz determinants for bounded turning functions subordinate to \(1+\tanh z\). (English) Zbl 1539.30008
The refined Schwarz-Pick estimates for positive real part holomorphic functions in several complex variables. (English) Zbl 1517.32049
Certain coefficient inequalities associated with Hankel determinant for a specific subfamily of holomorphic mappings. (English) Zbl 1513.30044
Application of Ruscheweyh \(q\)-differential operator to analytic functions of reciprocal order. (English) Zbl 1513.30062
Certain classes of \(k\)-uniformly functions with bounded radius rotation associated with linear operator. (English) Zbl 1488.30102
Zalcman conjecture and Hankel determinant of order three for starlike and convex functions associated with shell-like curves. (English) Zbl 1454.30004
Some subclasses of uniformly univalent functions with respect to symmetric points. (English) Zbl 1416.30004
MSC:
30C45
Applications of first order differential subordination for functions with positive real part. (English) Zbl 1438.30021
MSC:
30C45
New reciprocal class of analytic functions associated with linear operator. (English) Zbl 1397.30009
Bounds on the third order Hankel determinant for certain subclasses of analytic functions. (English) Zbl 1424.30086
New subclass of analytic functions in conical domain associated with Ruscheweyh \(q\)-differential operator. (English) Zbl 1376.30008
On a class of \(\alpha\)-convex functions subordinate to a shell shaped region. (English) Zbl 1369.30014
On analytic functions with generalized bounded Mocanu variation on conic domain with complex order. (English) Zbl 1413.30070
A generalization of Livingston’s coefficient inequalities for functions with positive real part. (English) Zbl 1336.30011
Reviewer: K. T. Hallenbeck (Chester)
Some properties of extended multiplier transformations to the classes of meromorphic multivalent functions. (English) Zbl 1373.30026
Inclusion relations for certain class of multivalent meromorphic functions. (English) Zbl 1463.30023
MSC:
30C45
Some classes of p-valent analytic functions associated with hypergeometric functions. (English) Zbl 1458.30027
Coefficient estimates for a class of bi-univalent functions defined by Salagean operator. (Chinese. English summary) Zbl 1349.30095
A pre-order on operators with positive real part and its invariance under linear fractional transformations. (English) Zbl 1295.47002
MSC:
47A05
On certain classes of meromorphically multivalent functions involving the generalized hypergeometric functions. (English) Zbl 1289.30088
MSC:
30C45
On certain subclass of \(p\)-valent functions involving the Dziok-Srivastava operator. (English) Zbl 1274.30049
Approximation of some classes of holomorphic functions and properties of generating kernels. (English) Zbl 1248.41016
Integral operator of analytic functions with positive real part. (English) Zbl 1218.30025
MSC:
30C45
Some radius problems for certain classes of analytic functions with fixed second coefficients. (English) Zbl 1250.30015
Reviewer: Mugur Acu (Sibiu)
Duality for Hadamard products applied to certain condition for \(\alpha\)-starlikeness. (English) Zbl 1224.30083
On certain classes of analytic functions defined by means of a linear operator. (English) Zbl 1224.30063
On a certain differential inequality I. (English) Zbl 1212.30088
MSC:
30C80
On a certain differential inequality. (English) Zbl 1265.30115
MSC:
30C80
On a family of functions holomorphic in a circle with positive real part of \(n\)th derivative. (Russian. English summary) Zbl 1218.30039
MSC:
30C45
On certain properties of the class of generalized \(p\)-valent non-Bazilevic functions. (English) Zbl 1224.30065
On coefficient estimates for a class of holomorphic mappings. (English) Zbl 1195.32011
Reviewer: Alexandr Yu. Rashkovsky (Stavanger)
Some convolution properties of certain classes of analytic functions. (English) Zbl 1159.30010
MSC:
30C45
On analytic functions with generalized bounded Mocanu variation. (English) Zbl 1133.30309
MSC:
30C45
Bounds for certain linear combinations of the Faber coefficients of functions analytic in an ellipse. (English) Zbl 1158.30007
Reviewer: Frederick W. Hartmann (Villanova)
Sharp inequalities for positive functions. (English) Zbl 1139.30014
Reviewer: Daniel Girela (Málaga)
MSC:
30D50
30D99
On neighborhoods of analytic functions having positive real part. (English) Zbl 1131.30318
MSC:
30C45
Generalized integral operator and multivalent functions. (English) Zbl 1084.30013
Reviewer: Dorina Raducanu (Brasov)
On certain classes of \(p\)-valent functions. (English) Zbl 1067.30027
Reviewer: V. Ravichandran (Penang)
Generalizastions of coefficients estimates for certain classes of analytic functions. (English) Zbl 0898.30011
Reviewer: K.S.Padmanabhan (Madras)
The classes of functions connected with certain functionals. (English) Zbl 0890.30008
Reviewer: Dov Aharonov (Haifa)
MSC:
30C45
A new variation for functions with positive real part. (English) Zbl 0844.30009
Reviewer: J.A.Hummel (College Park)
MSC:
30C45
On some classes of functions with an integral representation involving complex measures. (English) Zbl 0883.30017
Reviewer: L.Mikołajczyk (Łódź)
Some classes of differential subordinations in several complex variables implying functions with positive real part. I. (English) Zbl 0888.32010
Reviewer: P.Z.Agranovich (Khar’kov)
The problem of convexity of compactness of some classes of Carathéodory functions. (English) Zbl 0805.30011
15th educational conference on the theory of complex analysis and geometry, Bronisławów, Poland, 10-14 January, 1994. Proceedings. Łódź: Wydawnictwo Uniwersytetu Łódzkiego. 25-30 (1994).
Reviewer: Z.J.Jakubowski
MSC:
30C45
On coefficient estimates in a class of Carathéodory functions with positive real part. (English) Zbl 0797.30011
15th educational conference on the theory of complex analysis and geometry, Bronisławów, Poland, 10-14 January, 1994. Proceedings. Łódź: Wydawnictwo Uniwersytetu Łódzkiego. 17-24 (1994).
Reviewer: Z.J.Jakubowski (Łódź)
MSC:
30C45
On some classes of complex harmonic functions. (English) Zbl 0855.30011
MSC:
30C45
On some classes of functions \(p\)-valent in the disk. (Russian. English summary) Zbl 0809.30011
Reviewer: J.Szynal (Lublin)
MSC:
30C45
On some subclass of starlike functions with respect to symmetric points. (English) Zbl 0755.30016
Zesz. Nauk. Politech. Rzeszowskiej, Folia Sci. Univ. Tech. Resoviensis 85, Mat. Fiz. 12, Mat. 10, 65-73 (1991).
Reviewer: S.Ponnusamy (Madras)
MSC:
30C45
Special subclasses of Carathéodory functions and their applications. (English) Zbl 0754.30007
Zesz. Nauk. Politech. Rzeszowskiej, Folia Sci. Univ. Tech. Resoviensis 85, Mat. Fiz. 12, Mat. 10, 37-45 (1991).
Reviewer: O.Fekete (Freiburg)
The problems of majorization of derivatives. (English) Zbl 0757.30008
Zesz. Nauk. Politech. Rzeszowskiej, Folia Sci. Univ. Tech. Resoviensis 85, Mat. Fiz. 12, Mat. 10, 5-15 (1991).
Reviewer: O.Fekete (Freiburg)
MSC:
30C45
Functions with real part greater than \(\alpha\) and with fixed \(n\)-th coefficient. (English) Zbl 0761.30007
Reviewer: S.Ponnusamy (Madras)
MSC:
30C45
A note on certain subclass of analytic functions. (English) Zbl 0703.30013
Reviewer: O.Fekete
MSC:
30C45
Radii of starlikeness of certain classes of regular functions. (English. Russian original) Zbl 0693.30011
Ukr. Math. J. 41, No. 5, 601-603 (1989); translation from Ukr. Mat. Zh. 41, No. 5, 695-698 (1989).
MSC:
30C45
Eigenvalues of a certain quadratic pencil of operators. (English. Russian original) Zbl 0677.47010
Funct. Anal. Appl. 23, No. 1, 70-72 (1989); translation from Funkts. Anal. Prilozh. 23, No. 1, 80-81 (1989).
Reviewer: A.Pankov
MSC:
47A56
On radii of starlikeness of some classes of regular functions. (Russian) Zbl 0677.30009
Reviewer: Z.J.Jakubowski
MSC:
30C45
Starlike functions with a fixed coefficient. (English) Zbl 0653.30004
Reviewer: D.Aharonov
Asymptotical properties of analytic functions with positive real part. (Chinese) Zbl 0676.30013
Reviewer: Hu Ke
Analytic methods in mathematical physics. (English. Russian original) Zbl 0663.32005
Proc. Steklov Inst. Math. 175, 117-138 (1988); translation from Tr. Mat. Inst. Steklova 175, 113-133 (1986).
Some applications of real differential equations in the theory of special classes of analytic functions. (English. Russian original) Zbl 0654.30008
Ukr. Math. J. 39, No. 6, 628-629 (1987); translation from Ukr. Mat. Zh. 39, No. 6, 771-772 (1987).
MSC:
30C45
On one inequality for some regular functions in \(| z| <1\). (English) Zbl 0647.30005
Reviewer: H.Abe
MSC:
30C45
On some applications of real differential equations in the theory of special classes of analytic functions. (Russian) Zbl 0633.30012
Reviewer: Renate McLaughlin
MSC:
30C45
Extremal problems for functions of positive real part with a constraint and applications. (English) Zbl 0632.30016
Reviewer: Th.H.MacGregor
Functions of several complex variables in mathematical physics. (English. Russian original) Zbl 0625.32001
Transl., Ser. 2, Am. Math. Soc. 136, 19-33 (1987); translation from Problems of mathematics and mechanics, Collect. sci. Works, dedic. M. A. Lavrent’ev, Novosibirsk 1983, 15-32 (1983).
Holomorphic functions on the polydisc having positive real part. (English) Zbl 0616.32005
Reviewer: J.A.Adepoju
Analytic methods in mathematical physics. (Russian) Zbl 0629.32007
Reviewer: A.L.Onishchik
A coefficient functional for a class of functions with positive real part and its application. (Chinese) Zbl 0626.30030
Reviewer: Ren Fuyao
MSC:
30D50
On the property of functions with positive real part in a ring. (English) Zbl 0624.30010
Reviewer: Z.Jakubowski
MSC:
30C45
Kolmogorov inequality and estimates of boundary value distribution for analytic functions. (English. Russian original) Zbl 0623.30032
Sov. Math. 30, No. 10, 64-71 (1986); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 1986, No. 10(293), 47-52 (1986).
Reviewer: L.I.Ronkin
Examples of RP-measures. (English) Zbl 0612.32004
Reviewer: F.Forelli
MSC:
32A30
30D50
On the extreme points of a subclass of holomorphic functions with positive real part. (English) Zbl 0599.30056
Reviewer: D.Shaffer
Extrempunkte und Stützpunkte in Familien nicht-verschwindender schlichter Funktionen. (German) Zbl 0579.30013
Complex Variables, Theory Appl. (to appear).
On some problems in the family of functions with a positive real part. (English) Zbl 0606.30020
Reviewer: J.Kaczmarski
MSC:
30C45
On a class of integral operators. (Chinese) Zbl 0602.30013
Reviewer: Hu Ke
MSC:
30C45
Starlike function of complex order. (English) Zbl 0596.30017
Reviewer: V.Karunakaran
MSC:
30C45
The extreme points of some classes of polynomials. (English) Zbl 0595.30006
Reviewer: P.L.Duren
MSC:
30C10
30D50
An extremal problem for holomorphic functions and its application. (English) Zbl 0591.30016
Reviewer: J.A.Hummel
MSC:
30C45
Holomorphic functions with positive real part in tube domains over cones and distributions. (English) Zbl 0582.46043
Convergence and generalized functions, Proc. Conf., Katowice/Pol. 1983, 162-168 (1984).
Reviewer: A.Sergeev
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