Ein Existenzsatz über maßtreue Abbildungen.
Harmonische Funktionen und Jacobi- Determinanten von Diffeomorphismen
On the Absolute Continuity of a Surface Representation
Contact and conformal maps on Iwasawa N groups
The action of the conformal group on may be characterized in differential geometric terms, even locally: a theorem of Liouville states that a map between domains and in whose differential is a (variable) multiple of a (variable) isometry at each point of is the restriction to of a transformation , for some in . In this paper, we consider the problem of characterizing the action of a more general semisimple Lie group on the space , where is a parabolic subgroup. We solve...
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