Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > ILE Home > Th. List > nfcii | Unicode version |
Description: Deduce that a class does not have free in it. (Contributed by Mario Carneiro, 11-Aug-2016.) |
Ref | Expression |
---|---|
nfcii.1 |
Ref | Expression |
---|---|
nfcii |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nfcii.1 | . . 3 | |
2 | 1 | nfi 1391 | . 2 |
3 | 2 | nfci 2209 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wal 1282 wcel 1433 wnfc 2206 |
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-gen 1378 |
This theorem depends on definitions: df-bi 115 df-nf 1390 df-nfc 2208 |
This theorem is referenced by: (None) |
Copyright terms: Public domain | W3C validator |