Geodesic
Any O-simple dual semigroup is completely O-simple.
Semigroup forum, Tome 2 (1971), pp. 90-92.

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@article{SF_1971__2_133818,
     author = {S. Schwarz},
     title = {Any {O-simple} dual semigroup is completely {O-simple.}},
     journal = {Semigroup forum},
     pages = {90--92},
     publisher = {mathdoc},
     volume = {2},
     year = {1971},
     zbl = {0232.20117},
     url = {https://geodesic-test.mathdoc.fr/item/SF_1971__2_133818/}
}
TY  - JOUR
AU  - S. Schwarz
TI  - Any O-simple dual semigroup is completely O-simple.
JO  - Semigroup forum
PY  - 1971
SP  - 90
EP  - 92
VL  - 2
PB  - mathdoc
UR  - https://geodesic-test.mathdoc.fr/item/SF_1971__2_133818/
ID  - SF_1971__2_133818
ER  - 
%0 Journal Article
%A S. Schwarz
%T Any O-simple dual semigroup is completely O-simple.
%J Semigroup forum
%D 1971
%P 90-92
%V 2
%I mathdoc
%U https://geodesic-test.mathdoc.fr/item/SF_1971__2_133818/
%F SF_1971__2_133818
S. Schwarz. Any O-simple dual semigroup is completely O-simple.. Semigroup forum, Tome 2 (1971), pp. 90-92. https://geodesic-test.mathdoc.fr/item/SF_1971__2_133818/