| Metamath Proof Explorer |
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Related theorems GIF version |
| Description: Equality inference for operation value. |
| Ref | Expression |
|---|---|
| opreq1i.1 | ⊢ A = B |
| Ref | Expression |
|---|---|
| opreq2i | ⊢ (CFA) = (CFB) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | opreq1i.1 | . 2 ⊢ A = B | |
| 2 | opreq2 3960 | . 2 ⊢ (A = B → (CFA) = (CFB)) | |
| 3 | 1, 2 | ax-mp 7 | 1 ⊢ (CFA) = (CFB) |