Description: Subset carries from relation to predecessor class. (Contributed by Scott Fenton, 25-Nov-2024)
Ref | Expression | ||
---|---|---|---|
Assertion | predrelss | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cnvss | |
|
2 | imass1 | |
|
3 | sslin | |
|
4 | 1 2 3 | 3syl | |
5 | df-pred | |
|
6 | df-pred | |
|
7 | 4 5 6 | 3sstr4g | |