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Feb 20, 2022 at 22:45 vote accept Taras Banakh
Feb 20, 2022 at 22:20 answer added Salvo Tringali timeline score: 5
Feb 8, 2022 at 23:20 history edited YCor CC BY-SA 4.0
fixed typo, added tag
Feb 8, 2022 at 22:51 comment added Benjamin Steinberg Yes that is what Clifford means to me.
Feb 8, 2022 at 22:47 comment added Taras Banakh @BenjaminSteinberg For me also Clifford means something else, namely, to be the union of subgroups.
Feb 8, 2022 at 22:33 comment added Benjamin Steinberg The Wikipedia page would use the conjunction of left and right Clifford but to me Clifford means something else.
Feb 8, 2022 at 22:29 comment added Benjamin Steinberg The term comes from ring theory. Wikipedia isn't very complete
Feb 8, 2022 at 22:25 comment added Taras Banakh Thank you very much for the answer. Indeed there are some papers which use this terminology, but in Wikipedia paper (en.wikipedia.org/wiki/Special_classes_of_semigroups) duo semigroups are absent.
Feb 8, 2022 at 22:19 comment added Benjamin Steinberg I believe they are called duo
Feb 8, 2022 at 22:17 history asked Taras Banakh CC BY-SA 4.0