A. Fiorenza, M. Krbec

On an Optimal Decomposition in Zygmund Spaces

An optimal decomposition formula for the norm in the Orlicz space L(log L)a is given. New proofs of some results involving L(log L)a spaces are given and the decomposition is applied to apriori estimates for elliptic partial differential equations with the right-hand side in Zygmund classes.