Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > csbeq1d | Structured version Visualization version GIF version |
Description: Equality deduction for proper substitution into a class. (Contributed by NM, 3-Dec-2005.) |
Ref | Expression |
---|---|
csbeq1d.1 | ⊢ (𝜑 → 𝐴 = 𝐵) |
Ref | Expression |
---|---|
csbeq1d | ⊢ (𝜑 → ⦋𝐴 / 𝑥⦌𝐶 = ⦋𝐵 / 𝑥⦌𝐶) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | csbeq1d.1 | . 2 ⊢ (𝜑 → 𝐴 = 𝐵) | |
2 | csbeq1 3536 | . 2 ⊢ (𝐴 = 𝐵 → ⦋𝐴 / 𝑥⦌𝐶 = ⦋𝐵 / 𝑥⦌𝐶) | |
3 | 1, 2 | syl 17 | 1 ⊢ (𝜑 → ⦋𝐴 / 𝑥⦌𝐶 = ⦋𝐵 / 𝑥⦌𝐶) |
Copyright terms: Public domain | W3C validator |