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Mirrors > Home > MPE Home > Th. List > nfbii | Structured version Visualization version Unicode version |
Description: Equality theorem for the non-freeness predicate. (Contributed by Mario Carneiro, 11-Aug-2016.) df-nf 1710 changed. (Revised by Wolf Lammen, 12-Sep-2021.) |
Ref | Expression |
---|---|
nfbii.1 |
Ref | Expression |
---|---|
nfbii |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nfbiit 1777 | . 2 | |
2 | nfbii.1 | . 2 | |
3 | 1, 2 | mpg 1724 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wb 196 wnf 1708 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 |
This theorem depends on definitions: df-bi 197 df-ex 1705 df-nf 1710 |
This theorem is referenced by: nfxfr 1779 nfxfrd 1780 dvelimhw 2173 nfeqf1 2299 dfnfc2 4454 dfnfc2OLD 4455 bj-dvelimdv1 32835 bj-nfcf 32920 iunconnlem2 39171 |
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