Theorem f1f1orn 5472

Description: A one-to-one function maps one-to-one onto its range. (Contributed by NM, 4-Sep-2004.)

Assertion

Ref	Expression
f1f1orn	⊢ (𝐹:𝐴–1-1→𝐵 → 𝐹:𝐴–1-1-onto→ran 𝐹)

Proof of Theorem f1f1orn

Step	Hyp	Ref	Expression
1		f1fn 5423	. 2 ⊢ (𝐹:𝐴–1-1→𝐵 → 𝐹 Fn 𝐴)
2		df-f1 5221	. . 3 ⊢ (𝐹:𝐴–1-1→𝐵 ↔ (𝐹:𝐴⟶𝐵 ∧ Fun ◡𝐹))
3	2	simprbi 275	. 2 ⊢ (𝐹:𝐴–1-1→𝐵 → Fun ◡𝐹)
4		f1orn 5471	. 2 ⊢ (𝐹:𝐴–1-1-onto→ran 𝐹 ↔ (𝐹 Fn 𝐴 ∧ Fun ◡𝐹))
5	1, 3, 4	sylanbrc 417	1 ⊢ (𝐹:𝐴–1-1→𝐵 → 𝐹:𝐴–1-1-onto→ran 𝐹)

Syntax hints:   → wi 4  ^◡ccnv 4625  ran crn 4627  Fun wfun 5210   Fn wfn 5211  ⟶wf 5212  –1-1→wf1 5213  –1-1-onto→wf1o 5215

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-5 1447  ax-7 1448  ax-gen 1449  ax-ie1 1493  ax-ie2 1494  ax-8 1504  ax-11 1506  ax-4 1510  ax-17 1526  ax-i9 1530  ax-ial 1534  ax-i5r 1535  ax-ext 2159

This theorem depends on definitions:  df-bi 117  df-3an 980  df-nf 1461  df-sb 1763  df-clab 2164  df-cleq 2170  df-clel 2173  df-in 3135  df-ss 3142  df-f 5220  df-f1 5221  df-fo 5222  df-f1o 5223

This theorem is referenced by:  f1ores  5476  f1cnv  5485  f1cocnv1  5491  f1ocnvfvrneq  5782  ssenen  6850  f1dmvrnfibi  6942  cc2lem  7264  xpsff1o2  12764