Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4658543 | Topology and its Applications | 2014 | 9 Pages |
Abstract
In this paper, cardinal invariants in locally Ti-minimal paratopological groups with i=1,2,3 are studied. It mainly shows that: (1) If (G,Ï) is a T2 locally T1-minimal 2-oscillating paratopological group, then Ï(G)=ÏÏ(G)â
inv(G); (2) Let (G,Ï) be a locally T1-minimal paratopological group, then Ï(G)=Ï(G)â
inv(G); (3) If (G,Ï) is a locally T2-minimal paratopological group, then Ï(G)=Ï(G)â
inv(G)â
Hs(G); (4) If (G,Ï) is a locally T3-minimal paratopological group, then Ï(G)=Ï(G)â
inv(G)â
Ir(G). These results generalize the corresponding results in [9] and also give positive answers to two questions posed by F.C. Lin in [9].
Related Topics
Physical Sciences and Engineering
Mathematics
Geometry and Topology
Authors
Jing Zhang, Wei He,