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| Mirrors > Home > ILE Home > Th. List > simpllr | GIF version | ||
| Description: Simplification of a conjunction. (Contributed by Jeff Hankins, 28-Jul-2009.) | 
| Ref | Expression | 
|---|---|
| simpllr | ⊢ ((((𝜑 ∧ 𝜓) ∧ 𝜒) ∧ 𝜃) → 𝜓) | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | simpr 110 | . 2 ⊢ ((𝜑 ∧ 𝜓) → 𝜓) | |
| 2 | 1 | ad2antrr 488 | 1 ⊢ ((((𝜑 ∧ 𝜓) ∧ 𝜒) ∧ 𝜃) → 𝜓) | 
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