Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > ILE Home > Th. List > bicom1 | Unicode version |
Description: Commutative law for equivalence. (Contributed by Wolf Lammen, 10-Nov-2012.) |
Ref | Expression |
---|---|
bicom1 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | biimpr 129 | . 2 | |
2 | biimp 117 | . 2 | |
3 | 1, 2 | impbid 128 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wb 104 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 |
This theorem depends on definitions: df-bi 116 |
This theorem is referenced by: bicomi 131 bicom 139 pm5.21ndd 695 cbvexdh 1906 elabgf2 13365 |
Copyright terms: Public domain | W3C validator |