搜索结果: 1-2 共查到“理学 Injective hulls”相关记录2条 . 查询时间(0.031 秒)
Injective hulls of certain discrete metric spaces and groups
Injective hulls certain discrete metric spaces and groups Group Theory
2011/9/23
Abstract: Injective metric spaces, or absolute 1-Lipschitz retracts, share a number of properties with CAT(0) spaces. Isbell showed that every metric space X has an injective hull E(X). We prove that ...
An example of Melkersson subcategory which is not closed under injective hulls
Melkersson subcategory injective hulls
2010/11/12
The Melkersson subcategory is a special Serre subcategory. It was proved that a Serre subcategory which is closed under injective hulls is a Melkersson subcategory. However, it has been an open quest...