Mathematic 第十三届全国大学生数学竞赛(非数学类)决赛详细解答 放一篇Grisha Perelman大佬的文章:Ricci flow with surgery on three-manifolds 此页面有帮助吗? 谢谢你的反馈! Thanks for your feedback! Help us improve this page by using our feedback form.