| New Foundations Explorer | 
      
      
      < Previous  
      Next >
      
       Nearby theorems  | 
  ||
| 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
 | 
| Copyright terms: Public domain | W3C validator |