Description: The iota class is a subset of the union of all elements satisfying ph . (Contributed by Mario Carneiro, 24-Dec-2016) Remove dependency on ax-10 , ax-11 , ax-12 . (Revised by SN, 6-Nov-2024)
Ref | Expression | ||
---|---|---|---|
Assertion | iotassuni |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | iotauni2 | ||
2 | eqimss | ||
3 | 1 2 | syl | |
4 | iotanul2 | ||
5 | 0ss | ||
6 | 4 5 | eqsstrdi | |
7 | 3 6 | pm2.61i |