Stable moduli spaces of high‐dimensional handlebodies

Stable moduli spaces of high‐dimensional handlebodies
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高维手柄的稳定模空间

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发表时间:
2015
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通讯作者:
Nathan Perlmutter
Nathan Perlmutter
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作者:
B. Botvinnik;Nathan Perlmutter

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本文研究了与(Dn+1×Sn)<$g同构的同构体的模空间,即在嵌入圆D2 n <$$>(Dn+1× Sn)<$g附近限制于单位元的同构群的分类空间BDiff((Dn +1× Sn)<$g,D2 n).证明了存在一个自然映射colimg→∞BDiff((Dn+1×Sn)<$g,D2 n)<$Q0BO(2n+1)<$n <$+,当n <$4时,它诱导出一个积分同调同构.在上面,BO(2n+1)<$n <$表示BO(2n+1)的n-连通覆盖。
We study the moduli space of handlebodies diffeomorphic to (Dn+1×Sn)♮g , that is, the classifying space BDiff((Dn+1×Sn)♮g,D2n) of the group of diffeomorphisms that restrict to the identity near an embedded disk D2n⊂∂(Dn+1×Sn)♮g . We prove that there is a natural map colimg→∞BDiff((Dn+1×Sn)♮g,D2n)⟶Q0BO(2n+1)⟨n⟩+,which induces an isomorphism in integral homology when n⩾4 . Above, BO(2n+1)⟨n⟩ denotes the n ‐connective cover of BO(2n+1) .