Poincare Complex Diagonals
代数拓扑
2007-05-23 v2
摘要
Let M be a Poincare duality space of dimension at least four. In this paper we describe a complete obstruction to realizing the diagonal map M -> M x M by a Poincare embedding. The obstruction group depends only on the fundamental group and the parity of the dimension of M.
引用
@article{arxiv.math/0611036,
title = {Poincare Complex Diagonals},
author = {John R. Klein},
journal= {arXiv preprint arXiv:math/0611036},
year = {2007}
}
备注
Fixed some references, minor typos and improved some formulations