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| Mirrors > Home > MPE Home > Th. List > eqidd | Structured version Visualization version GIF version | ||
| Description: Class identity law with antecedent. (Contributed by NM, 21-Aug-2008.) |
| Ref | Expression |
|---|---|
| eqidd | ⊢ (𝜑 → 𝐴 = 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2737 | . 2 ⊢ 𝐴 = 𝐴 | |
| 2 | 1 | a1i 11 | 1 ⊢ (𝜑 → 𝐴 = 𝐴) |
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