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math.AP2017
Littlewood-Paley-Stein operators on Damek-Ricci spaces
Anestis Fotiadis, Effie Papageorgiou
We obtain pointwise upper bounds on the derivatives of the heat kernel on Damek-Ricci spaces. Applying these estimates we prove the -boundedness of Littlewood-Paley-Stein oper…
math.AP2017
The derivatives of the heat kernel on symmetric spaces
A. Fotiadis, E. Papageorgiou
We derive estimates of the derivatives of the heat kernel on noncompact symmetric spaces and on locally symmetric spaces. Applying these estimates we study the -boundedness…