Description: An alternate definition of a limit ordinal. (Contributed by NM, 4-Nov-2004)
Ref | Expression | ||
---|---|---|---|
Assertion | dflim2 | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-lim | |
|
2 | ord0eln0 | |
|
3 | 2 | anbi1d | |
4 | 3 | pm5.32i | |
5 | 3anass | |
|
6 | 3anass | |
|
7 | 4 5 6 | 3bitr4i | |
8 | 1 7 | bitr4i | |