Việt
nửa nhóm
nửa nhóm abel
Nhóm abel
Anh
abelian group
semi group abel
ABELIAN GROUP
band of semigroups
half-group
semigroup
abelian group,semi group abel
ABELIAN GROUP,SEMI GROUP ABEL /toán & tin/
nửa nhóm abel, Nhóm abel
ABELIAN GROUP,SEMI GROUP ABEL, band of semigroups, half-group, semigroup