Agnieszka Hejna

activity

20182025

most citedHarmonic functions, conjugate harmonic functions and the Hardy space

H^{1}

in the rational Dunkl setting

7 citations · 8 across the 12 of their papers we have counts for

collaborators

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2 papers · 1 filter

math.FA2025

Littlewood-Paley square functions and the local Hardy space for Multi-Norm Structures on $R^{d}$

Agnieszka Hejna, Alexander Nagel, Fulvio Ricci

Multi-norm singular integrals and Fourier multipliers were introduced in [29], and one application of these notions was a precise description of the composition of convolution oper…

math.FA2025

Characterizations of $H^{1}$ and Fefferman-Stein decompositions of $BMO$ functions by systems of singular integrals in the Dunkl setting

Jacek Dziubański, Agnieszka Hejna

We extend the classical theorem of Uchiyama about constructive Fefferman-Stein decompositions of $BMO$ functions by systems of singular integrals to the rational Dunkl settin…

Littlewood-Paley square functions and the local Hardy space for Multi-Norm Structures on Rd

Characterizations of H1 and Fefferman-Stein decompositions of BMO functions by systems of singular integrals in the Dunkl setting

Littlewood-Paley square functions and the local Hardy space for Multi-Norm Structures on $R^{d}$

Characterizations of $H^{1}$ and Fefferman-Stein decompositions of $BMO$ functions by systems of singular integrals in the Dunkl setting