The word problem for 3-manifolds built from injective handlebodies

The universal cover of 3-manifolds built from injective handlebodies is $\mathbb R^3$

This paper gives a proof that the universal cover of a closed 3-manifold built from three $π_1$-injective handlebodies is homeomorphic to $\mathbb R^3$. This construction is an extension to handlebodies of the conditions for gluing of three solid tori to produce non-Haken Seifert fibered manifolds with infinite fundamental group. This class of manifolds has been shown to contain non-Haken non-Seifert fibered manifolds.

3-manifolds built from injective handlebodies

This paper looks at a class of closed orientable 3-manifolds constructed from a gluing of three handlebodies, such that the inclusion of each handlebody is $π_1$-injective. This construction is the generalisation to handlebodies of the condition for gluing three solid tori to produce non-Haken Seifert fibered 3-manifolds with infinite fundamental group. It is shown that there is an efficient algorithm to decide if a gluing of handlebodies meets the disk-condition. Also an outline for the construction of the characteristic variety (JSJ decomposition) in such manifolds is given. Some non-Haken a…

黎曼曲面与柄体模空间的最高权上同调

Top weight cohomology of moduli spaces of Riemann surfaces and handlebodies

本研究证明双曲曲面模空间$M_g$中含足够多短测地线的曲面轨迹是柄体映射类群的分类空间，由此推出$M_g$的最高权上同调可单射到柄体映射类群的上同调中。