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math.DG2011★ 1 cited
An Omori-Yau maximum principle for semi-elliptic operators and Liouville-type theorems
Kyusik Hong, Chanyoung Sung
We generalize the Omori-Yau almost maximum principle of the Laplace-Beltrami operator on a complete Riemannian manifold to a second-order linear semi-elliptic operator with…
math.GT2011★ 4 cited
Finite group actions and G-monopole classes on smooth 4-manifolds
Chanyoung Sung
On a smooth closed oriented -manifold with a smooth action by a compact Lie group , we define a -monopole class as an element of which is the first Che…