| Intuitionistic Logic Explorer | 
      
      
      < Previous  
      Next >
      
       Nearby theorems  | 
  ||
| Mirrors > Home > ILE Home > Th. List > impcom | GIF version | ||
| Description: Importation inference with commuted antecedents. (Contributed by NM, 25-May-2005.) | 
| Ref | Expression | 
|---|---|
| imp.1 | ⊢ (𝜑 → (𝜓 → 𝜒)) | 
| Ref | Expression | 
|---|---|
| impcom | ⊢ ((𝜓 ∧ 𝜑) → 𝜒) | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | imp.1 | . . 3 ⊢ (𝜑 → (𝜓 → 𝜒)) | |
| 2 | 1 | com12 30 | . 2 ⊢ (𝜓 → (𝜑 → 𝜒)) | 
| 3 | 2 | imp 124 | 1 ⊢ ((𝜓 ∧ 𝜑) → 𝜒) | 
| Copyright terms: Public domain | W3C validator |