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math.DG2002
Jordan Szabo algebraic covariant derivative curvature tensors
Peter B. Gilkey, Raina Ivanova, Iva Stavrov
We show that if is a Jordan Szabo algebraic covariant derivative curvature tensor on a vector space of signature (p,q), where q is odd and p is less than q or if q is co…
math.DG2002
Curvature tensors whose Jacobi or Szabo operator is nilpotent on null vectors
Peter Gilkey, Iva Stavrov
We show that any Osserman Lorentzian algebraic curvature tensor has constant sectional curvature and give an elementary proof that any local 2 point homogeneous Lorentzian mani…