Description: Change bound variable. Uses only Tarski's FOL axiom schemes. Part of Lemma 7 of KalishMontague p. 86. (Contributed by NM, 9-Apr-2017)
Ref | Expression | ||
---|---|---|---|
Hypothesis | cbvalivw.1 | |
|
Assertion | cbvalivw | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cbvalivw.1 | |
|
2 | 1 | spimvw | |
3 | 2 | alrimiv | |