Description: Identical to anifp . Justification for ax-frege58a . (Contributed by RP, 28-Mar-2020)
Ref | Expression | ||
---|---|---|---|
Assertion | axfrege58a | ⊢ ( ( 𝜓 ∧ 𝜒 ) → if- ( 𝜑 , 𝜓 , 𝜒 ) ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | anifp | ⊢ ( ( 𝜓 ∧ 𝜒 ) → if- ( 𝜑 , 𝜓 , 𝜒 ) ) |