Metamath Proof Explorer


Definition df-csgrp2

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

Ref Expression
Assertion df-csgrp2 CSGrpALT=gSGrpALT|+gcomLawBaseg

Detailed syntax breakdown

Step Hyp Ref Expression
0 ccsgrp2 classCSGrpALT
1 vg setvarg
2 csgrp2 classSGrpALT
3 cplusg class+𝑔
4 1 cv setvarg
5 4 3 cfv class+g
6 ccomlaw classcomLaw
7 cbs classBase
8 4 7 cfv classBaseg
9 5 8 6 wbr wff+gcomLawBaseg
10 9 1 2 crab classgSGrpALT|+gcomLawBaseg
11 0 10 wceq wffCSGrpALT=gSGrpALT|+gcomLawBaseg