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math.FA2019
Weighted inequalities for discrete iterated Hardy operators
Amiran Gogatishvili, Martin Křepela, Rastislav Oľhava +1
We characterize a three-weight inequality for an iterated discrete Hardy-type operator. In the case when the domain space is a weighted space with , we develop…
math.AP2019
Solenoidal difference quotients and their application to the regularity theory of the -Stokes system
Martin Křepela, Michael Růžička
We prove existence of a solution to the divergence equation satisfying a new Bogovski-type estimate for the difference quotients. This enables us to give an alternative proof of th…