Description: Introduce conjunct to both sides of an implication. (Contributed by Peter Mazsa, 24-Sep-2022)
Ref | Expression | ||
---|---|---|---|
Hypothesis | anim1i.1 | ⊢ ( 𝜑 → 𝜓 ) | |
Assertion | anim1ci | ⊢ ( ( 𝜑 ∧ 𝜒 ) → ( 𝜒 ∧ 𝜓 ) ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | anim1i.1 | ⊢ ( 𝜑 → 𝜓 ) | |
2 | id | ⊢ ( 𝜒 → 𝜒 ) | |
3 | 1 2 | anim12ci | ⊢ ( ( 𝜑 ∧ 𝜒 ) → ( 𝜒 ∧ 𝜓 ) ) |