Abstract
We give several characterizations of Zimmermann's uniform chain condition on matrix subgroups. In particular, we prove that a family of modules satisfies it precisely when the direct sum of their pure injective envelopes splits in their direct product. We also prove that a weaker non-uniform version of this condition is equivalent to Σ-algebraic compactness of reduced products.
| Original language | English |
|---|---|
| Pages (from-to) | 3104-3113 |
| Number of pages | 10 |
| Journal | Communications in Algebra |
| Volume | 39 |
| Issue number | 9 |
| DOIs | |
| State | Published - 2011 |
Bibliographical note
Funding Information:The author gratefully acknowledges the support provided by King Fahd University of Petroleum and Minerals.
Keywords
- Finite matrix subgroup
- Pure injective
- Reduced product
ASJC Scopus subject areas
- Algebra and Number Theory