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Related theorems Unicode version |
| Description: Equality inference for operation value. |
| Ref | Expression |
|---|---|
| opreq1i.1 |
|
| opreq12i.2 |
|
| Ref | Expression |
|---|---|
| opreq12i |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | opreq1i.1 |
. . 3
| |
| 2 | 1 | opreq1i 4029 |
. 2
|
| 3 | opreq12i.2 |
. . 3
| |
| 4 | 3 | opreq2i 4030 |
. 2
|
| 5 | 2, 4 | eqtri 1542 |
1
|