
The paper contains an argument leading to a classification of Einstein four-manifolds with a 3-dimensional Abelian group of isometries, first established by Kasner in 1923.
Matematik, Local Riemannian geometry, Special Riemannian manifolds (Einstein, Sasakian, etc.), Four Dimensional;Einstein Manifolds;Statistics, Einstein four-manifolds, group of isometries, Mathematical Sciences
Matematik, Local Riemannian geometry, Special Riemannian manifolds (Einstein, Sasakian, etc.), Four Dimensional;Einstein Manifolds;Statistics, Einstein four-manifolds, group of isometries, Mathematical Sciences
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