On Whitehead precovers
逻辑
2007-05-23 v1 环与代数
摘要
It is proved undecidable in ZFC + GCH whether every Z-module has a^{perp} {Z}-precover.
引用
@article{arxiv.math/0011228,
title = {On Whitehead precovers},
author = {Paul C. Eklof and Saharon Shelah},
journal= {arXiv preprint arXiv:math/0011228},
year = {2007}
}