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| Mirrors > Home > ILE Home > Th. List > simplrl | GIF version | ||
| Description: Simplification of a conjunction. (Contributed by Jeff Hankins, 28-Jul-2009.) | 
| Ref | Expression | 
|---|---|
| simplrl | ⊢ (((𝜑 ∧ (𝜓 ∧ 𝜒)) ∧ 𝜃) → 𝜓) | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | simpl 109 | . 2 ⊢ ((𝜓 ∧ 𝜒) → 𝜓) | |
| 2 | 1 | ad2antlr 489 | 1 ⊢ (((𝜑 ∧ (𝜓 ∧ 𝜒)) ∧ 𝜃) → 𝜓) | 
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