Metamath Proof Explorer
Description: Equality deduction for operation value. (Contributed by NM, 10-Aug-1995)
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|
Ref |
Expression |
|
Hypotheses |
oveq1d.1 |
|
|
|
opreqan12i.2 |
|
|
Assertion |
oveqan12rd |
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Proof
Step |
Hyp |
Ref |
Expression |
1 |
|
oveq1d.1 |
|
2 |
|
opreqan12i.2 |
|
3 |
1 2
|
oveqan12d |
|
4 |
3
|
ancoms |
|