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| Mirrors > Home > ILE Home > Th. List > sylancl | Unicode version | ||
| Description: Syllogism inference combined with modus ponens. (Contributed by Jeff Madsen, 2-Sep-2009.) |
| Ref | Expression |
|---|---|
| sylancl.1 |
|
| sylancl.2 |
|
| sylancl.3 |
|
| Ref | Expression |
|---|---|
| sylancl |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sylancl.1 |
. 2
| |
| 2 | sylancl.2 |
. . 3
| |
| 3 | 2 | a1i 9 |
. 2
|
| 4 | sylancl.3 |
. 2
| |
| 5 | 1, 3, 4 | syl2anc 411 |
1
|
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