Description: Transfinite Induction Schema, using implicit substitution. (Contributed by NM, 18-Aug-1994)
Ref | Expression | ||
---|---|---|---|
Hypotheses | tfis2.1 | |
|
tfis2.2 | |
||
Assertion | tfis2 | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | tfis2.1 | |
|
2 | tfis2.2 | |
|
3 | nfv | |
|
4 | 3 1 2 | tfis2f | |