Yuki Kiyota, Kazumi Tsukada
Curvature tensors and Singer invariants of four-dimensional homogeneous spaces

Comment.Math.Univ.Carolinae 40,4 (1999) 723-733.

Abstract:We show that the Singer invariant of a four-dimensional homogeneous space is at most $1$.

Keywords: homogeneous spaces, Singer invariant
AMS Subject Classification: 53C30

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