Naturally reductive homogeneous spaces and generalized Heisenberg groups
Nichtsymmetrische sechsdimensionale Liesche Gruppen.
Nilpotent Lie groups and eigenfunction expansions of Schrödinger operators II
Nilpotent Lie groups and summability of eigenfunction expansions of Schrödinger operators
Nilpotente Liesche Gruppen haben symmetrische Gruppenalgebren.
Nilvariétés projectives.
Noncoercive differential operators on homogeneous manifolds of negative curvature and their Green functions
We obtain upper and lower estimates for the Green function for a second order noncoercive differential operator on a homogeneous manifold of negative curvature.
Normalizers of compact subgroups, the existence of commuting automorphisms, and applications to operator semistable measures.
Note on coarea formulae in the Heisenberg group.
We show a first nontrivial example of coarea formula for vector-valued Lipschitz maps defined on the three dimensional Heisenberg group. In this coarea formula, integration on level sets is performed with respect to the 2-dimensional spherical Hausdorff measure, built by the Carnot-Carathéodory distance. The standard jacobian is replaced by the so called horizontal jacobian, corresponding to the jacobian of the Pansu differential of the Lipschitz map. Joining previous results, we achieve all possible...
Note on Nilpotent Spaces and Localization.
N-step nilpotent Lie groups with flat Kirillov orbits