Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > MPE Home > Th. List > imp | Unicode version |
Description: Importation inference. (Contributed by NM, 3-Jan-1993.) (Proof shortened by Eric Schmidt, 22-Dec-2006.) |
Ref | Expression |
---|---|
imp.1 |
Ref | Expression |
---|---|
imp |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-an 371 | . 2 | |
2 | imp.1 | . . 3 | |
3 | 2 | impi 148 | . 2 |
4 | 1, 3 | sylbi 195 | 1 |
Copyright terms: Public domain | W3C validator |