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Definition df-sgrOLD 33289
Description: Obsolete version of df-sgrp 17205 as of 3-Feb-2020. A semi-group is an associative magma. (Contributed by FL, 2-Nov-2009.) (New usage is discouraged.)
Assertion
Ref Expression
df-sgrOLD SemiGrp = (Magma ∩ Ass)

Detailed syntax breakdown of Definition df-sgrOLD
StepHypRef Expression
1 csem 33288 . 2 class SemiGrp
2 cmagm 33276 . . 3 class Magma
3 cass 33270 . . 3 class Ass
42, 3cin 3554 . 2 class (Magma ∩ Ass)
51, 4wceq 1480 1 wff SemiGrp = (Magma ∩ Ass)
Colors of variables: wff setvar class
This definition is referenced by:  smgrpismgmOLD  33290  issmgrpOLD  33291
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