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 Jacobi fields and conjugate points on Heisenberg group Bull. Korean Math. Soc. 1998 Vol. 35, No. 1, 25-32 Keun Park University of Ulsan Abstract : Let $N$ be the 3-dimensional Heisenberg group equipped with a left-invariant metric on $N$. We characterize the Jacobi fields and the conjugate points along a geodesic on $N,$ which points out that Theorem 4 of \cite{1} is not correct. Keywords : Heisenberg group, Jacobi fields, conjugate points MSC numbers : 53C30, 22E25 Downloads: Full-text PDF