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Mirrors > Home > MPE Home > Th. List > cnveqd | Structured version Visualization version GIF version |
Description: Equality deduction for converse relation. (Contributed by NM, 6-Dec-2013.) |
Ref | Expression |
---|---|
cnveqd.1 | ⊢ (𝜑 → 𝐴 = 𝐵) |
Ref | Expression |
---|---|
cnveqd | ⊢ (𝜑 → ◡𝐴 = ◡𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cnveqd.1 | . 2 ⊢ (𝜑 → 𝐴 = 𝐵) | |
2 | cnveq 5785 | . 2 ⊢ (𝐴 = 𝐵 → ◡𝐴 = ◡𝐵) | |
3 | 1, 2 | syl 17 | 1 ⊢ (𝜑 → ◡𝐴 = ◡𝐵) |
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