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Mirrors > Home > MPE Home > Th. List > fveq1i | Structured version Visualization version GIF version |
Description: Equality inference for function value. (Contributed by NM, 2-Sep-2003.) |
Ref | Expression |
---|---|
fveq1i.1 | ⊢ 𝐹 = 𝐺 |
Ref | Expression |
---|---|
fveq1i | ⊢ (𝐹‘𝐴) = (𝐺‘𝐴) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fveq1i.1 | . 2 ⊢ 𝐹 = 𝐺 | |
2 | fveq1 6782 | . 2 ⊢ (𝐹 = 𝐺 → (𝐹‘𝐴) = (𝐺‘𝐴)) | |
3 | 1, 2 | ax-mp 5 | 1 ⊢ (𝐹‘𝐴) = (𝐺‘𝐴) |
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