Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > ILE Home > Th. List > 3or6 | Unicode version |
Description: Analog of or4 720 for triple conjunction. (Contributed by Scott Fenton, 16-Mar-2011.) |
Ref | Expression |
---|---|
3or6 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | or4 720 | . . 3 | |
2 | or4 720 | . . . 4 | |
3 | 2 | orbi1i 712 | . . 3 |
4 | 1, 3 | bitr2i 183 | . 2 |
5 | df-3or 920 | . 2 | |
6 | df-3or 920 | . . 3 | |
7 | df-3or 920 | . . 3 | |
8 | 6, 7 | orbi12i 713 | . 2 |
9 | 4, 5, 8 | 3bitr4i 210 | 1 |
Colors of variables: wff set class |
Syntax hints: wb 103 wo 661 w3o 918 |
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-io 662 |
This theorem depends on definitions: df-bi 115 df-3or 920 |
This theorem is referenced by: (None) |
Copyright terms: Public domain | W3C validator |