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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 2739 | . 2 ⊢ 𝐴 = 𝐴 | |
2 | 1 | a1i 11 | 1 ⊢ (𝜑 → 𝐴 = 𝐴) |
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