Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > ILE Home > Th. List > nfci | Unicode version |
Description: Deduce that a class does not have free in it. (Contributed by Mario Carneiro, 11-Aug-2016.) |
Ref | Expression |
---|---|
nfci.1 |
Ref | Expression |
---|---|
nfci |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-nfc 2247 | . 2 | |
2 | nfci.1 | . 2 | |
3 | 1, 2 | mpgbir 1414 | 1 |
Colors of variables: wff set class |
Syntax hints: wnf 1421 wcel 1465 wnfc 2245 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-gen 1410 |
This theorem depends on definitions: df-bi 116 df-nfc 2247 |
This theorem is referenced by: nfcii 2249 nfcv 2258 nfab1 2260 nfab 2263 |
Copyright terms: Public domain | W3C validator |