Mathematics – Representation Theory
Scientific paper
2004-03-24
Mathematics
Representation Theory
31 pages, Latex2e, XY-pic used
Scientific paper
Let X=G/K be a connected Riemannian homogeneous space of a real Lie group G. The homogeneous space X is called commutative if the algebra of G-invariant differential operators on X is commutative. We prove an effective commutativity criterion and classify commutative spaces under two mild technical constraints. In particular, we obtain several new examples of commutative homogeneous spaces that are not of Heisenberg type.
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