Metamath Proof Explorer
Description: Acommutative semigroup is a semigroup with a commutative operation.
(Contributed by AV, 20-Jan-2020)
|
|
Ref |
Expression |
|
Assertion |
df-csgrp2 |
|
Detailed syntax breakdown
| Step |
Hyp |
Ref |
Expression |
| 0 |
|
ccsgrp2 |
|
| 1 |
|
vg |
|
| 2 |
|
csgrp2 |
|
| 3 |
|
cplusg |
|
| 4 |
1
|
cv |
|
| 5 |
4 3
|
cfv |
|
| 6 |
|
ccomlaw |
|
| 7 |
|
cbs |
|
| 8 |
4 7
|
cfv |
|
| 9 |
5 8 6
|
wbr |
|
| 10 |
9 1 2
|
crab |
|
| 11 |
0 10
|
wceq |
|