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Mirrors > Home > MPE Home > Th. List > f1f | Structured version Visualization version GIF version |
Description: A one-to-one mapping is a mapping. (Contributed by NM, 31-Dec-1996.) |
Ref | Expression |
---|---|
f1f | ⊢ (𝐹:𝐴–1-1→𝐵 → 𝐹:𝐴⟶𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-f1 6423 | . 2 ⊢ (𝐹:𝐴–1-1→𝐵 ↔ (𝐹:𝐴⟶𝐵 ∧ Fun ◡𝐹)) | |
2 | 1 | simplbi 497 | 1 ⊢ (𝐹:𝐴–1-1→𝐵 → 𝐹:𝐴⟶𝐵) |
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