Metamath Proof Explorer


Theorem xrneq2d

Description: Equality theorem for the range Cartesian product, deduction form. (Contributed by Peter Mazsa, 7-Sep-2021)

Ref Expression
Hypothesis xrneq2d.1 ⊢ φ → A = B
Assertion xrneq2d ⊢ φ → C ⋉ A = C ⋉ B

Proof

Step Hyp Ref Expression
1 xrneq2d.1 ⊢ φ → A = B
2 xrneq2 ⊢ A = B → C ⋉ A = C ⋉ B
3 1 2 syl ⊢ φ → C ⋉ A = C ⋉ B