Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > ILE Home > Th. List > eqcomi | GIF version |
Description: Inference from commutative law for class equality. (Contributed by NM, 5-Aug-1993.) |
Ref | Expression |
---|---|
eqcomi.1 | ⊢ 𝐴 = 𝐵 |
Ref | Expression |
---|---|
eqcomi | ⊢ 𝐵 = 𝐴 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqcomi.1 | . 2 ⊢ 𝐴 = 𝐵 | |
2 | eqcom 2167 | . 2 ⊢ (𝐴 = 𝐵 ↔ 𝐵 = 𝐴) | |
3 | 1, 2 | mpbi 144 | 1 ⊢ 𝐵 = 𝐴 |
Copyright terms: Public domain | W3C validator |