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Related theorems Unicode version |
| Description: A mixed syllogism inference. |
| Ref | Expression |
|---|---|
| syl5bir.1 |
|
| syl5bir.2 |
|
| Ref | Expression |
|---|---|
| syl5bir |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | syl5bir.1 |
. . 3
| |
| 2 | 1 | biimprd 154 |
. 2
|
| 3 | syl5bir.2 |
. 2
| |
| 4 | 2, 3 | syl5 21 |
1
|