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| Mirrors > Home > ILE Home > Th. List > ax-ia2 | GIF version | ||
| Description: Right 'and' elimination. One of the axioms of propositional logic. (Contributed by Mario Carneiro, 31-Jan-2015.) Use its alias simpr 110 instead for naming consistency with set.mm. (New usage is discouraged.) | 
| Ref | Expression | 
|---|---|
| ax-ia2 | ⊢ ((𝜑 ∧ 𝜓) → 𝜓) | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | wph | . . 3 wff 𝜑 | |
| 2 | wps | . . 3 wff 𝜓 | |
| 3 | 1, 2 | wa 104 | . 2 wff (𝜑 ∧ 𝜓) | 
| 4 | 3, 2 | wi 4 | 1 wff ((𝜑 ∧ 𝜓) → 𝜓) | 
| Colors of variables: wff set class | 
| This axiom is referenced by: simpr 110 | 
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