Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > ILE Home > Th. List > nfnf1 | Unicode version |
Description: is not free in . (Contributed by Mario Carneiro, 11-Aug-2016.) |
Ref | Expression |
---|---|
nfnf1 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-nf 1390 | . 2 | |
2 | nfa1 1474 | . 2 | |
3 | 1, 2 | nfxfr 1403 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wal 1282 wnf 1389 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-5 1376 ax-gen 1378 ax-ial 1467 |
This theorem depends on definitions: df-bi 115 df-nf 1390 |
This theorem is referenced by: nfimd 1517 nfnt 1586 nfald 1683 equs5or 1751 sbcomxyyz 1887 nfsb4t 1931 nfnfc1 2222 sbcnestgf 2953 dfnfc2 3619 bdsepnft 10678 setindft 10760 strcollnft 10779 |
Copyright terms: Public domain | W3C validator |