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| Mirrors > Home > NFE Home > Th. List > imp | Unicode version | ||
| Description: Importation inference. (Contributed by NM, 5-Aug-1993.) (Proof shortened by Eric Schmidt, 22-Dec-2006.) |
| Ref | Expression |
|---|---|
| imp.1 |
|
| Ref | Expression |
|---|---|
| imp |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-an 360 |
. 2
| |
| 2 | imp.1 |
. . 3
| |
| 3 | 2 | impi 140 |
. 2
|
| 4 | 1, 3 | sylbi 187 |
1
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