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 ) ) |
| 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 ) ) |