Resultats globals: 5 registres trobats en 0.02 segons.
Articles, 3 registres trobats
Documents de recerca, 2 registres trobats
Articles 3 registres trobats  
1.
25 p, 403.4 KB Dyadic lower little BMO estimates / Domelevo, Komla (Julius-Maximilians-Universität Würzburg. Institut für Mathematik) ; Kakaroumpas, Spyridon (Julius-Maximilians-Universität Würzburg. Institut für Mathematik) ; Petermichl, Stefanie (Julius-Maximilians-Universität Würzburg. Institut für Mathematik) ; Soler i Gibert, Odí (Julius-Maximilians-Universität Würzburg. Institut für Mathematik)
We characterize dyadic little BMO via the boundedness of the tensor commutator with a single well-chosen dyadic shift. It is shown that several proof strategies work for this problem, both in the unweighted case and with Bloom weights. [...]
2023 - 10.5565/PUBLMAT6722307
Publicacions matemàtiques, Vol. 67 Núm. 2 (2023) , p. 661-685 (Articles)  
2.
20 p, 289.8 KB Why the Riesz transforms are averages of the dyadic shifts? / Petermichl, Stefanie (Institute for Advanced Studies (Princeton, Estats Units d'Amèrica)) ; Treil, S. (Brown University. Department of Mathematics) ; Volberg, A. (Michigan State University. Department of Mathematics)
The first author showed in [18] that the Hilbert transform lies in the closed convex hull of dyadic singular operators -so-called dyadic shifts. We show here that the same is true in any Rn -the Riesz transforms can be obtained as the results of averaging of dyadic shifts. [...]
2002 - 10.5565/PUBLMAT_Esco02_10
Publicacions matemàtiques, Vol. Extra (2002) , p. 209-228  
3.
19 p, 191.4 KB Extrapolation and sharp norm estimates for classical operators on weighted Lebesgue spaces / Dragicevic, Oliver ; Grafakos, Loukas ; Pereyra, María Cristina ; Petermichl, Stefanie
We obtain sharp weighted Lp estimates in the Rubio de Francia extrapolation theorem in terms of the Ap characteristic constant of the weight. Precisely, if for a given 1 < r < [infinity] the norm of a sublinear operator on Lr(w) is bounded by a function of the Ar characteristic constant of the weight w, then for p > r it is bounded on Lp(v) by the same increasing function of the Ap characteristic constant of v, and for p < r it is bounded on Lp(v) by the same increasing function of the r-1/p-1 power of the Ap characteristic constant of v. [...]
2005 - 10.5565/PUBLMAT_49105_03
Publicacions matemàtiques, V. 49 N. 1 (2005) , p. 73-91  

Documents de recerca 2 registres trobats  
1.
14 p, 408.5 KB Sharp A₂ inequality for haar shift operators / Lacey, Michael T. ; Petermichl, Stefanie ; Reguera, Maria Carmen ; Centre de Recerca Matemàtica
"Vegeu el resum a l'inici del document del fitxer adjunt".
Centre de Recerca Matemàtica 2009 (Prepublicacions del Centre de Recerca Matemàtica ; 862)  
2.
22 p, 317.5 KB A rotation method which gives linear Lp-Estimates for powers of the Ahlfors-Beurling operator / Dragicevic, Oliver ; Petermichl, Stefanie ; Volberg, A. ; Centre de Recerca Matemàtica
"Vegeu el resum a l'inici del document del fitxer adjunt. ".
Centre de Recerca Matemàtica 2006 (Prepublicacions del Centre de Recerca Matemàtica ; 690)  

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2 Petermichl, S.
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