SMOOTHABILITY OF Z x Z-ACTIONS ON 4-MANIFOLDS

作者：Nakamura Nobuhiro^*

来源：Proceedings of the American Mathematical Society, 2010, 138(8): 2973-2978.

• Group action
• smoothability
• Enriques surface

We construct a nonsmoothable Z x Z-action on the connected sum of an Enriques surface and S(2) x S(2), such that each of the generators is smoothable. We also construct a nonsmoothable self-homeomorphism on an Enriques surface.

• 出版日期2010-8