Description: Obsolete version of 0fi as of 13-Jan-2025. (Contributed by FL, 14-Jul-2008) (Proof modification is discouraged.) (New usage is discouraged.)
Ref | Expression | ||
---|---|---|---|
Assertion | 0finOLD |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | peano1 | ||
2 | ssid | ||
3 | ssnnfi | ||
4 | 1 2 3 | mp2an |