**
Beiträge zur Algebra und Geometrie **

Contributions to Algebra and Geometry

38(2), 325-336 (1997)

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Four-dimensional Ball-homogeneous and C-spaces

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G. Calvaruso, Ph. Tondeur, L. Vanhecke

1,3: Department of Mathematics, Katholieke Universiteit Leuven,

Celestijnenlaan 200B, 3001 Leuven, Belgium 2: Department of Mathematics, University of Illinois at Urbana-Champaign,

1409 West Green Street, Urbana, IL 61801, USA

**Abstract:** We prove that four-dimensional {\it ball-homogeneous} Einstein manifolds which are 2-stein or Hermitian are locally symmetric. Most of the results are extended to the class of four-dimensional {\it C-spaces}.

**Keywords:** Four-dimensional Einstein manifolds, ball-homogeneous spaces, C-spaces

**Classification (MSC91):** 53C25, 53C30, 53C35

**Full text of the article:**

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