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Description: Commuted form of expd . (Contributed by Alan Sare, 18-Mar-2012) Shorten expd . (Revised by Wolf Lammen, 28-Jul-2022)
| Ref | Expression | ||
|---|---|---|---|
| Hypothesis | expd.1 | ⊢ ( 𝜑 → ( ( 𝜓 ∧ 𝜒 ) → 𝜃 ) ) | |
| Assertion | expdcom | ⊢ ( 𝜓 → ( 𝜒 → ( 𝜑 → 𝜃 ) ) ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | expd.1 | ⊢ ( 𝜑 → ( ( 𝜓 ∧ 𝜒 ) → 𝜃 ) ) | |
| 2 | 1 | com12 | ⊢ ( ( 𝜓 ∧ 𝜒 ) → ( 𝜑 → 𝜃 ) ) |
| 3 | 2 | ex | ⊢ ( 𝜓 → ( 𝜒 → ( 𝜑 → 𝜃 ) ) ) |