8 citations · 8 across the 3 of their papers we have counts for
4 papers
A note on the existence of the maximum likelihood estimate in variance components models
Mariusz Grządziel, Andrzej Michalski
In the paper, the problem of the existence of the maximum likelihood estimate and the REML estimate in the variance components model is considered. Errors in the proof of Theorem 3…
A generalization of the Clunie--Sheil-Small theorem
Małgorzata Michalska, Andrzej Michalski
In 1984, a simple and useful univalence criterion for harmonic functions was given by Clunie and Sheil-Small, which is usually called the shear construction. However, the applicati…
Necessary condition for compactness of a difference of composition operators on the Dirichlet space
Małgorzata Michalska, Andrzej Michalski
Let be a self-map of the unit disk and let denote the composition operator acting on the standard Dirichlet space . A necessary condition for compactness of…
Locally one-to-one harmonic functions with starlike analytic part
Ikkei Hotta, Andrzej Michalski
Let denote the set of all normalized locally one-to-one and sense-preserving harmonic functions in the unit disc . It is well-known that every complex-valued harmonic func…