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Mirrors > Home > ILE Home > Th. List > cbvrexv | Unicode version |
Description: Change the bound variable of a restricted existential quantifier using implicit substitution. (Contributed by NM, 2-Jun-1998.) |
Ref | Expression |
---|---|
cbvralv.1 |
Ref | Expression |
---|---|
cbvrexv |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nfv 1521 | . 2 | |
2 | nfv 1521 | . 2 | |
3 | cbvralv.1 | . 2 | |
4 | 1, 2, 3 | cbvrex 2693 | 1 |
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