关于环面丛的覆盖的亏格
On genera of coverings of torus bundles
摘要：
在表明覆盖空间的表面丛$S^1$的因素，作为一个“覆盖的纤维”，其次是一个“权力覆盖”，我们证明了，环面丛，权力覆盖不降低Heegaard属，和纤维覆盖降低属只有在特殊情况下。
英文摘要：
After showing that a covering space of surface bundles over $S^1$ factors as a `covering of fibers' followed by a `power covering', we prove that, for torus bundles, power coverings do not lower Heegaard genus, and that fiber coverings lower the genus only in special cases.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
