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Mirrors > Home > MPE Home > Th. List > reseq1i | Structured version Visualization version GIF version |
Description: Equality inference for restrictions. (Contributed by NM, 21-Oct-2014.) |
Ref | Expression |
---|---|
reseqi.1 | ⊢ 𝐴 = 𝐵 |
Ref | Expression |
---|---|
reseq1i | ⊢ (𝐴 ↾ 𝐶) = (𝐵 ↾ 𝐶) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | reseqi.1 | . 2 ⊢ 𝐴 = 𝐵 | |
2 | reseq1 5874 | . 2 ⊢ (𝐴 = 𝐵 → (𝐴 ↾ 𝐶) = (𝐵 ↾ 𝐶)) | |
3 | 1, 2 | ax-mp 5 | 1 ⊢ (𝐴 ↾ 𝐶) = (𝐵 ↾ 𝐶) |
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