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| Mirrors > Home > ILE Home > Th. List > nfv | Unicode version | ||
| Description: If  | 
| Ref | Expression | 
|---|---|
| nfv | 
 | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | ax-17 1540 | 
. 2
 | |
| 2 | 1 | nfi 1476 | 
1
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