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Related theorems Unicode version |
| Description: Inference eliminating an antecedent. |
| Ref | Expression |
|---|---|
| pm2.61i.1 |
|
| pm2.61i.2 |
|
| Ref | Expression |
|---|---|
| pm2.61i |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | pm2.61i.1 |
. . 3
| |
| 2 | pm2.61i.2 |
. . 3
| |
| 3 | 1, 2 | nsyl4 170 |
. 2
|
| 4 | pm2.18 129 |
. 2
| |
| 5 | 3, 4 | ax-mp 7 |
1
|