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Journal of Lie Theory 18 (2008), No. 4, 817--837 Copyright Heldermann Verlag 2008 Actions of Vanishing Homogeneity Rank on Quaternionic-Kähler Projective Spaces Lucio Bedulli Dip. di Matematica, Università di Firenze, Viale Morgagni 67/A, 50134 Firenze, Italy bedulli@math.unifi.it Anna Gori Dip. di Matematica, Università di Bologna, Piazza di Porta S. Donato 5, 40126 Bologna, Italy gori@math.unifi.it We classify isometric actions of compact Lie groups on quaternionic-Kähler projective spaces with vanishing homogeneity rank. We also show that in general they are not quaternion-coisotropic. Keywords: Quaternionic-Kaehler manifolds, homogeneity rank, polar actions. MSC: 53C26, 57S15 [ Fulltext-pdf (227 KB)] for subscribers only. |