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math.GR2025
The Structure of Sequentially Complete Locally Minimal Groups
Dikran Dikranjan, Wei He, Dekui Peng
Generalizing results from \cite{DTk,DU} we study the fine structure of locally minimal (locally) precompact Abelian groups (these are the locally essential subgroups of LCA gro…
math.GR2025
Density Spectra of Topological Groups
Dekui Peng, Yi Zhou
We study density spectra associated with dense and closed subgroups of topological groups. For a topological group , let $\dd^*(G)$ denote the set of densities of its dense subg…