6 citations · 11 across the 7 of their papers we have counts for
7 papers
Wave equation and multiplier estimates on Damek-Ricci spaces
Detlef Mueller, Maria Vallarino
Let S be a Damek-Ricci space and L be a distinguished left invariant Laplacian on S. We prove pointwise estimates for the convolution kernels of spectrally localized wave operators…
Local solvability of linear differential operators with double characteristics I: Necessary conditions
Detlef Mueller
This is a the first in a series of two articles devoted to the question of local solvability of doubly characteristic differential operators defined, say, in an open set $\Om\…
Local solvability of second order differential operators with double characteristics I: Necessary conditions
Detlef Mueller
This is a the first in a series of two articles devoted to the question of local solvability of doubly characteristic second order differential operators. For a large class of such…
Wave equation and multiplier estimates on ax+b groups
Detlef Mueller, Christoph Thiele
Let L be the distinguished Laplacian on certain semidirect products of R by R^n which are of ax+b type. We prove pointwise estimates for the convolution kernels of spectrally local…
Sub-Laplacians of holomorphic -type on exponential solvable groups
W. Hebisch, J. Ludwig, D. Mueller
Let denote a right-invariant sub-Laplacian on an exponential, hence solvable Lie group , endowed with a left-invariant Haar measure. Depending on the structure of , and p…
Solvability of dissipative second order left-invariant differential operators on the Heisenberg group
Detlef Mueller
We prove local solvability for large classes of operators of the form where the are left-invariant vector fields on the Heisenberg g…