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| Mirrors > Home > ILE Home > Th. List > simprll | GIF version | ||
| Description: Simplification of a conjunction. (Contributed by Jeff Hankins, 28-Jul-2009.) |
| Ref | Expression |
|---|---|
| simprll | ⊢ ((𝜑 ∧ ((𝜓 ∧ 𝜒) ∧ 𝜃)) → 𝜓) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | simpl 109 | . 2 ⊢ ((𝜓 ∧ 𝜒) → 𝜓) | |
| 2 | 1 | ad2antrl 490 | 1 ⊢ ((𝜑 ∧ ((𝜓 ∧ 𝜒) ∧ 𝜃)) → 𝜓) |
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