Prof. dr hab. Krzysztof Stempak

Selected publications
 Mean summability methods for Laguerre series, Trans. Amer. Math. Soc. 322, (1990), 671690.
 On connections between Hankel, Laguerre and Heisenberg multipliers, J. London Math. Soc. 51, (1995), 286298.
 (with W. Trebels) On weighted transplantation and multipliers for Laguerre expansions, Math. Annalen 300, (1994), 203219.
 (with J.L. Torrea) Poisson integrals and Riesz transforms for Hermite function expansions with weights, J. Funct. Anal. 202, (2003), 443472.
 (with O. Ciaurri) Transplantation and multiplier theorems for FourierBessel expansions, Trans. Amer. Math. Soc. 358, (2006), 44414465.
 (with A. Nowak) Riesz transforms and conjugacy for Laguerre expansions of Hermite type, J. Funct. Anal. 244, (2007), 399443.
 (with A. Nowak) Riesz transforms for multidimensional Laguerre function expansions, Advances in Math. 215, (2007), 642678.
 (with C.C. Lin) Local HardyLittlewood maximal operator, Math. Annalen 348, (2010), 797813.
 (with A. Nowak) Potential operators associated with Hankel and HankelDunkl transforms, J. d'Anal. Math. 131, (2017), 277321.
Hobby
I like sailing and kayaking during summers and skiing during winters. On Masurian Lakes (NorthEast of Poland) I sail since 1976; I was almost everywhere there, sailing also on such "exotic" lakes like: Gołdopiwo, Pozezdrze, Warnołty, Tyrkło (I did not enter Buwełno, Łuknajno and Tuchlin).
I kayaked the following rivers and kayak trails in Poland (some of them several times): Czarna Hańcza, Krutynia, Drawa, Gwda, Brda, Wda, Piława, Sapina, the OstródaElbląg Channel, a part of Brodnica cirle.