Definition df-csgrp2 45304

Description: A commutative semigroup is a semigroup with a commutative operation. (Contributed by AV, 20-Jan-2020.)

Assertion

Ref	Expression
df-csgrp2	⊢ CSGrpALT = {𝑔 ∈ SGrpALT ∣ (+g‘𝑔) comLaw (Base‘𝑔)}

Detailed syntax breakdown of Definition df-csgrp2

Step	Hyp	Ref	Expression
1		ccsgrp2 45300	. 2 class CSGrpALT
2		vg	. . . . . 6 setvar 𝑔
3	2	cv 1538	. . . . 5 class 𝑔
4		cplusg 16888	. . . . 5 class +g
5	3, 4	cfv 6418	. . . 4 class (+g‘𝑔)
6		cbs 16840	. . . . 5 class Base
7	3, 6	cfv 6418	. . . 4 class (Base‘𝑔)
8		ccomlaw 45267	. . . 4 class comLaw
9	5, 7, 8	wbr 5070	. . 3 wff (+g‘𝑔) comLaw (Base‘𝑔)
10		csgrp2 45299	. . 3 class SGrpALT
11	9, 2, 10	crab 3067	. 2 class {𝑔 ∈ SGrpALT ∣ (+g‘𝑔) comLaw (Base‘𝑔)}
12	1, 11	wceq 1539	1 wff CSGrpALT = {𝑔 ∈ SGrpALT ∣ (+g‘𝑔) comLaw (Base‘𝑔)}

This definition is referenced by:  iscsgrpALT  45308