arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1305.4615math.SGmath.GT
收藏

异国情调的迭代德恩扭曲

Exotic iterated Dehn twists

Paul Seidel

摘要:

考虑奇异球的余切丛,以及它们的正则辛结构。他们承认自同构保持部分在无穷大的一个纤维,这是类似的平方德恩扭曲。追求的类比,我们表明,他们有无限的顺序,直到合痕(内的所有自同构具有相同的行为)。

英文摘要:

Consider cotangent bundles of exotic spheres, with their canonical symplectic structure. They admit automorphisms which preserve the part at infinity of one fibre, and which are analogous to the square of a Dehn twist. Pursuing that analogy, we show that they have infinite order up to isotopy (inside the group of all automorphisms with the same behaviour).

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。

↑