Let L be a homogeneous sublaplacian on the 6-dimensional free 2-step nilpotent Lie group on three generators. We prove a theorem of Mikhlin-Hörmander type for the functional calculus of L, where the order of differentiability s > 6/2 is required on the multiplier.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-sm217-1-3,
author = {Alessio Martini and Detlef M\"uller},
title = {$L^{p}$ spectral multipliers on the free group $N\_{3,2}$
},
journal = {Studia Mathematica},
volume = {215},
year = {2013},
pages = {41-55},
zbl = {1285.43002},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-sm217-1-3}
}
Alessio Martini; Detlef Müller. $L^{p}$ spectral multipliers on the free group $N_{3,2}$
. Studia Mathematica, Tome 215 (2013) pp. 41-55. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-sm217-1-3/