论文标题
等级$π_1(\ text {ham})$
On the rank of $π_1(\text{Ham})$
论文作者
论文摘要
我们表明,对于任何积极的整数$ k $,都存在一个封闭的符号$ 4 $ - manifold,因此,哈密顿式差异性的基本组的排名至少为$ k。
We show that for any positive integer $k$ there exists a closed symplectic $4$-manifold, such that the rank of the fundamental group of the group of Hamiltonian diffeomorphisms is at least $k.$