Metamath Proof Explorer


Theorem oveqdr

Description: Equality of two operations for any two operands. Useful in proofs using *propd theorems. (Contributed by Mario Carneiro, 29-Jun-2015)

Ref Expression
Hypothesis oveqdr.1 ⊢ φ → F = G
Assertion oveqdr ⊢ φ ∧ ψ → x F y = x G y

Proof

Step Hyp Ref Expression
1 oveqdr.1 ⊢ φ → F = G
2 1 oveqd ⊢ φ → x F y = x G y
3 2 adantr ⊢ φ ∧ ψ → x F y = x G y