Nonhomogeneous Riemannian 3-manifolds with distinct constant Ricci eigenvalues
Commentationes Mathematicae Universitatis Carolinae, Tome 34 (1993) no. 3, pp. 451-457.

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We extend a construction by K. Yamato [Ya] to obtain new explicit examples of Riemannian 3-manifolds as in the title. Some of these examples have an interesting geometrical interpretation.
Classification : 53C20, 53C21, 53C25, 53C30, 53C40
Keywords: Riemannian manifold; curvature homogeneous space
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     title = {Nonhomogeneous {Riemannian} 3-manifolds with distinct constant {Ricci} eigenvalues},
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Kowalski, Oldřich. Nonhomogeneous Riemannian 3-manifolds with distinct constant Ricci eigenvalues. Commentationes Mathematicae Universitatis Carolinae, Tome 34 (1993) no. 3, pp. 451-457. http://geodesic.mathdoc.fr/item/CMUC_1993__34_3_a7/