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 Gradient Ricci solitons with semi-symmetry Bull. Korean Math. Soc. 2014 Vol. 51, No. 1, 213-219 https://doi.org/10.4134/BKMS.2014.51.1.213Printed January 1, 2014 Jong Taek Cho and Jiyeon Park Chonnam National University, Chonnam National University Abstract : We prove that a semi-symmetric 3-dimensional gradient Ricci soliton is locally isometric to a space form $\mathbb S^3$, $\mathbb H^3$, $\mathbb R^3$ (Gaussian soliton); or a product space $\mathbb R\times \mathbb S^2$, $\mathbb R\times \mathbb H^2$, where the potential function depends only on the nullity. Keywords : semi-symmetric spaces, gradient Ricci solitons, Gaussian soliton MSC numbers : 53C21, 53C25 Downloads: Full-text PDF