New Foundations Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > NFE Home > Th. List > com25 | GIF version |
Description: Commutation of antecedents. Swap 2nd and 5th. (Contributed by Jeff Hankins, 28-Jun-2009.) |
Ref | Expression |
---|---|
com5.1 | ⊢ (φ → (ψ → (χ → (θ → (τ → η))))) |
Ref | Expression |
---|---|
com25 | ⊢ (φ → (τ → (χ → (θ → (ψ → η))))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | com5.1 | . . . 4 ⊢ (φ → (ψ → (χ → (θ → (τ → η))))) | |
2 | 1 | com24 81 | . . 3 ⊢ (φ → (θ → (χ → (ψ → (τ → η))))) |
3 | 2 | com45 83 | . 2 ⊢ (φ → (θ → (χ → (τ → (ψ → η))))) |
4 | 3 | com24 81 | 1 ⊢ (φ → (τ → (χ → (θ → (ψ → η))))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 |
This theorem is referenced by: (None) |
Copyright terms: Public domain | W3C validator |