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Results overview: Found 7 records in 0.02 seconds.
Articles, 6 records found Books and collections, 1 records found

Articles	6 records found

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 - DOI (Digital Object Identifier)

10.5565/PUBLMAT6722307
Publicacions matemàtiques, Vol. 67 Núm. 2 (2023) , p. 661-685 (Articles)

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27 p, 418.0 KB

Lower central words in finite p-groups / de las Heras, Iker (Euskal Herriko Unibertsitatea (UPV/EHU). Zientzia eta Teknologia Fakultatea, Matematika Saila) ; Morigi, Marta (Universit'a di Bologna (Bolonia, Italia). Dipartimento di Matematica)
It is well known that the set of values of a lower central word in a group G need not be a subgroup. For a fixed lower central word γr and for p ≥ 5, Guralnick showed that if G is a finite p-group such that the verbal subgroup γr(G) is abelian and 2-generator, then γr(G) consists only of γr-values. [...]
2021 - DOI (Digital Object Identifier)

10.5565/publicacionsmatematiques.v65i1.383697
Publicacions matemàtiques, Vol. 65 Núm. 1 (2021) , p. 243-269 (Articles)

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49 p, 554.4 KB

Two-weight commutator estimates : general multi-parameter framework / Airta, Emil (University of Helsinki. Department of Mathematics and Statistics)
We provide an explicit technical framework for proving very general two-weight commutator estimates in arbitrary parameters. The aim is to both clarifyexisting literature, which often explicitly focuses on two parameters only, and toextend very recent results to the full generality of arbitrary parameters. [...]
2020 - DOI (Digital Object Identifier)

10.5565/PUBLMAT6422013
Publicacions matemàtiques, Vol. 64 Núm. 2 (2020) , p. 681-729 (Articles)

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30 p, 425.1 KB

Upper bound for multi-parameter iterated commutators / Dalenc, Laurent (Université Paul Sabatier. Institut de Mathématiques de Toulouse) ; Ou, Yumeng (Brown University. Department of Mathematics)
We show that the product BMO space can be characterized by iterated commutators of a large class of Calderón-Zygmund operators. This result followsfrom a new proof of boundedness of iterated commutators in terms of the BMO norm of their symbol functions, using Hytönen's representation theorem of Calderón-Zygmund operators as averages of dyadic shifts. [...]
2016 - DOI (Digital Object Identifier)

10.5565/PUBLMAT_60116_07
Publicacions matemàtiques, Vol. 60 Núm. 1 (2016) , p. 191-220 (Survey)

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44 p, 543.4 KB

Sharp norm inequalities for commutators of classical operators / Cruz-Uribe, David (Trinity College. Department of Mathematics (Hartford, Estats Units)) ; Moen, Kabe (University of Alabama. Department of Mathematics)
We prove several sharp weighted norm inequalities for commutators of classical operators in harmonic analysis. We found suffcient Ap-bump conditions on pairs of weights (u; v) such that [b; T], b 2 BMO and T a singular integral operator (such as the Hilbert or Riesz transforms), maps Lp(v) into Lp(u). [...]
2012 - DOI (Digital Object Identifier)

10.5565/PUBLMAT_56112_06
Publicacions matemàtiques, Vol. 56, Núm. 1 ( 2012) , p. 147-190

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$Endpoint estimates and weighted norm inequalities for commutators of fractional integrals$

29 p, 243.3 KB

Endpoint estimates and weighted norm inequalities for commutators of fractional integrals / Cruz-Uribe, David (Trinity College. Department of Mathematics) ; Fiorenza, Alberto (Universitá di Napoli. Dipartimento di Costruzioni e Metodi Matematici in Architettura)
We prove that the commutator [b, Iα], b ∈ BMO, Iα the fractional integral operator, satisfies the sharp, modular weak-type inequality f(x) tdx, where B(t) = tlog(e + t) and Ψ(t)=[tlog(e + tα/n)]n/(n−α). [...]
2003 - DOI (Digital Object Identifier)

10.5565/PUBLMAT_47103_05
Publicacions matemàtiques, V. 47 N. 1 (2003) , p. 103-131

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Books and collections	1 records found

18 p, 349.8 KB

An abstract Coifman-Rochberg-Weiss commutator theorem / Martín i Pedret, Joaquim (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Milman, Mario (Florida Atlantic University. Department of Mathematics)
We formulate and prove a version of the celebrated Coifman-Rochberg-Weiss commutator theorem for the real method of interpolation.
New Jersey [etc.] : World Scientific, 2008 - DOI (Digital Object Identifier)

10.1142/9789812834447_0010
Topics in Classical Analysis and Applications in Honor of Daniel Waterman, 2008, p. 141-160

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