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math.DG2008★ 4 cited
On positively curved 4-manifolds with S^1-symmetry
Jin Hong Kim
It is well-known by the work of Hsiang and Kleiner that every closed oriented positively curved 4-dimensional manifold with an effective isometric S^1-action is homeomorphic to S^4…
math.DG2006★ 1 cited
Rigidity of periodic diffeomorphisms on homotopy K3 surfaces
Jin Hong Kim
The aim of this paper is to show the rigidity of homologically trivial actions of prime order on K3 surfaces. To be precise, we show that homotopy K3 surfaces do not admit a period…