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