On the relation between lifting obstructions and ordinary obstructions
代数拓扑
2007-05-23 v1
摘要
We consider partial liftings of maps at fibrations and compare the primary obstruction to extend the lifting with the obstruction to extend the lifting as a simple map into the total space. A relation between these two obstructions is proved for the case when the fiber is an Eilenberg-MacLane space. Furthermore it is shown that this result specialises to well known facts about secondary obstructions.
关键词
引用
@article{arxiv.math/9812054,
title = {On the relation between lifting obstructions and ordinary obstructions},
author = {Christian Bohr},
journal= {arXiv preprint arXiv:math/9812054},
year = {2007}
}
备注
LaTeX, 9 pages. To appear in Top. Appl