Estimates for asymptotically conformal mappings.
Estimates for capacities, and approximation in Lipschitz norms.
Estimates for integral means of hyperbolically convex functions.
Estimates for polynomials in the unit disk with varying constant terms
Let || · || be the uniform norm in the unit disk. We study the quantities Mn (α) := inf (||zP(z) + α|| - α) where the infimum is taken over all polynomials P of degree n - 1 with ||P(z)|| = 1 and α > 0. In a recent paper by Fournier, Letac and Ruscheweyh (Math. Nachrichten 283 (2010), 193-199) it was shown that infα>0Mn (α) = 1/n. We find the exact values of Mn (α) and determine corresponding extremal polynomials. The method applied uses known cases of maximal ranges of polynomials.
Estimates for quasiconformal mappings onto canonical domains.
Estimates for some functionals of bounded nonvanishing functions.
Estimates for the energy integral of quasiregular mappings on Riemannian manifolds and isoperimetry
The rate of growth of the energy integral of a quasiregular mapping is estimated in terms of a special isoperimetric condition on . The estimate leads to new Phragmén-Lindelöf type theorems.
Estimates in the Hardy-Sobolev space of the annulus and stability result
The main purpose of this work is to establish some logarithmic estimates of optimal type in the Hardy-Sobolev space ; of an annular domain. These results are considered as a continuation of a previous study in the setting of the unit disk by L. Baratchart and M. Zerner, On the recovery of functions from pointwise boundary values in a Hardy-Sobolev class of the disk, J. Comput. Appl. Math. 46 (1993), 255–269 and by S. Chaabane and I. Feki, Optimal logarithmic estimates in Hardy-Sobolev spaces...
Estimates of derivatives and Schwarz derivatives for generalized Aharonov pairs and determination of the totality of extremal pairs
Estimates of logarithmic coefficients of univalent functions.
Estimates of the parameters of conformal mappings associated with a periodic Jacobi matrix.
Estimates of the real part of for some classes of univalent functions
Estimation d'opérateurs intégraux du type de Cauchy dans les échelles d'Ovsjannikov et application
On établit des estimations de l’intégrale singulière de Cauchy et des opérateurs du potentiel dans des échelles d’Ovjannikov de fonctions analytiques. Ces estimations sont utilisées pour obtenir des résultats d’existence locale en temps de solutions analytiques pour certains problèmes à frontière libre dans le plan.
Estimation of Green's function on piecewise Dini-smooth bounded Jordan domains
We establish inequalities for Green functions on general bounded piecewise Dini-smooth Jordan domains in ℝ². This enables us to prove a new version of the 3G Theorem which generalizes its previous version given in [M. Selmi, Potential Anal. 13 (2000)]. Using these results, we give a comparison theorem for the Green kernel of Δ and the Green kernel of Δ - μ, where μ is a nonnegative and exact Radon measure.
Estimation of polynomial roots by continued fractions
Estimation of the hyper-order of entire solutions of complex linear ordinary differential equations whose coefficients are entire functions.
Estimation of the sixth coefficient in the class of bounded univalent functions with real coefficients
Estimation over curves of the functions given by Dirichlet series on a half-plane.
Estimations asymptotiques des intervalles d'instabilité pour l'équation de Hill
Estimations of the coefficients of quasi-starlike functions