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Related theorems Unicode version |
| Description: A syllogism inference combined with contraction. |
| Ref | Expression |
|---|---|
| syl3anc.1 |
|
| syl3anc.2 |
|
| syl3anc.3 |
|
| syl3anc.4 |
|
| Ref | Expression |
|---|---|
| syl3anc |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | syl3anc.2 |
. . 3
| |
| 2 | syl3anc.3 |
. . 3
| |
| 3 | syl3anc.4 |
. . 3
| |
| 4 | 1, 2, 3 | 3jca 818 |
. 2
|
| 5 | syl3anc.1 |
. 2
| |
| 6 | 4, 5 | syl 10 |
1
|