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Dive into the research topics where Karl-Joachim Wirths is active.

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Featured researches published by Karl-Joachim Wirths.


TAEBC-2009 | 2009

Schwarz-pick type inequalities

F. G. Avkhadiev; Karl-Joachim Wirths

1. Introduction.- 2. Basic coefficient inequalities.- 3. The Poincare metric.- 4. Basic Schwarz-Pick type inequalities.- 5. Punishing factors for special cases.- 6. Multiply connected domains.- 7. Related results.- 8. Some open problems.


Commentarii Mathematici Helvetici | 2006

Sharp inequalities for the coefficients of concave schlicht functions

F. G. Avkhadiev; Christian Pommerenke; Karl-Joachim Wirths

Let


Forum Mathematicum | 2007

A proof of the Livingston conjecture

F. G. Avkhadiev; Karl-Joachim Wirths

D


Results in Mathematics | 2000

AN IMAGE-AREA INEQUALITY FOR SOME PLANAR HOLOMORPHIC MAPS

Karl-Joachim Wirths; J. Xiao

denote the open unit disc and let


Israel Journal of Mathematics | 2005

THE CONFORMAL RADIUS AS A FUNCTION AND ITS GRADIENT IMAGE

F. G. Avkhadiev; Karl-Joachim Wirths

f\colon D\to \mathbb{C}


Geometriae Dedicata | 2004

Schwarz-Pick Inequalities for Hyperbolic Domains in the Extended Plane

F. G. Avkhadiev; Karl-Joachim Wirths

be holomorphic and injective in


Quaestiones Mathematicae | 2005

Julia's Lemma and concave schlicht functions

Karl-Joachim Wirths

D


Arkiv för Matematik | 2001

A short proof of a theorem of Bertilsson by direct use of Löwner’s method

Karl-Joachim Wirths

. We further assume that


arXiv: Complex Variables | 2010

On Some Problems of James Miller

Bappaditya Bhowmik; Saminathan Ponnusamy; Karl-Joachim Wirths

f(D)


Complex Variables and Elliptic Equations | 1987

On the Number of Isolated Maxima of Extreme Bloch Functions

Mario Bonk; Peter Weigang; Karl-Joachim Wirths

is unbounded and

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Saminathan Ponnusamy

Indian Institute of Technology Madras

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Bappaditya Bhowmik

Indian Institute of Technology Kharagpur

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Oliver Roth

University of Würzburg

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Christian Pommerenke

Technical University of Berlin

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J. Xiao

Concordia University

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Mario Bonk

University of Michigan

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J. Xiao

Concordia University

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