Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > f1of1 | Structured version Visualization version GIF version |
Description: A one-to-one onto mapping is a one-to-one mapping. (Contributed by NM, 12-Dec-2003.) |
Ref | Expression |
---|---|
f1of1 | ⊢ (𝐹:𝐴–1-1-onto→𝐵 → 𝐹:𝐴–1-1→𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-f1o 6425 | . 2 ⊢ (𝐹:𝐴–1-1-onto→𝐵 ↔ (𝐹:𝐴–1-1→𝐵 ∧ 𝐹:𝐴–onto→𝐵)) | |
2 | 1 | simplbi 497 | 1 ⊢ (𝐹:𝐴–1-1-onto→𝐵 → 𝐹:𝐴–1-1→𝐵) |
Copyright terms: Public domain | W3C validator |