77 citations · 243 across the 38 of their papers we have counts for
4 papers · 2 filters
The sharp square function estimate with matrix weight
Tuomas Hytönen, Stefanie Petermichl, Alexander Volberg
We prove the matrix conjecture for the dyadic square function, that is, a norm estimate of the matrix weighted square function, where the focus is on the sharp linear depende…
Various sharp estimates for semi-discrete Riesz transforms of the second order
Komla Domelevo, Adam Osekowski, Stefanie Petermichl
We give several sharp estimates for a class of combinations of second order Riesz transforms on Lie groups that are multiply connected, composed of a d…
Weighted little bmo and two-weight inequalities for Journé commutators
Irina Holmes, Stefanie Petermichl, Brett D. Wick
We characterize the boundedness of the commutators with biparameter Journé operators in the two-weight, Bloom-type setting, and express the norms of these commutators…
Convex body domination and weighted estimates with matrix weights
Fedor Nazarov, Stefanie Petermichl, Sergei Treil +1
We introduce the so called convex body valued sparse operators, which generalize the notion of sparse operators to the case of spaces of vector valued functions. We prove that Cald…