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| Mirrors > Home > ILE Home > Th. List > simprbi | GIF version | ||
| Description: Deduction eliminating a conjunct. (Contributed by NM, 27-May-1998.) | 
| Ref | Expression | 
|---|---|
| simprbi.1 | ⊢ (𝜑 ↔ (𝜓 ∧ 𝜒)) | 
| Ref | Expression | 
|---|---|
| simprbi | ⊢ (𝜑 → 𝜒) | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | simprbi.1 | . . 3 ⊢ (𝜑 ↔ (𝜓 ∧ 𝜒)) | |
| 2 | 1 | biimpi 120 | . 2 ⊢ (𝜑 → (𝜓 ∧ 𝜒)) | 
| 3 | 2 | simprd 114 | 1 ⊢ (𝜑 → 𝜒) | 
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