Theorem nff1o 6135

Description: Bound-variable hypothesis builder for a one-to-one onto function. (Contributed by NM, 16-May-2004.)

Hypotheses

Ref	Expression
nff1o.1	|- F/_ x F
nff1o.2	|- F/_ x A
nff1o.3	|- F/_ x B

Assertion

Ref	Expression
nff1o	|- F/ x F : A -1-1-onto-> B

Proof of Theorem nff1o

Step	Hyp	Ref	Expression
1		df-f1o 5895	. 2 |- ( F : A -1-1-onto-> B <-> ( F : A -1-1-> B /\ F : A -onto-> B ) )
2		nff1o.1	. . . 4 |- F/_ x F
3		nff1o.2	. . . 4 |- F/_ x A
4		nff1o.3	. . . 4 |- F/_ x B
5	2, 3, 4	nff1 6099	. . 3 |- F/ x F : A -1-1-> B
6	2, 3, 4	nffo 6114	. . 3 |- F/ x F : A -onto-> B
7	5, 6	nfan 1828	. 2 |- F/ x ( F : A -1-1-> B /\ F : A -onto-> B )
8	1, 7	nfxfr 1779	1 |- F/ x F : A -1-1-onto-> B

Syntax hints:   /\ wa 384   F/wnf 1708   F/_wnfc 2751   -1-1->wf1 5885   -onto->wfo 5886   -1-1-onto->wf1o 5887

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ral 2917  df-rab 2921  df-v 3202  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-sn 4178  df-pr 4180  df-op 4184  df-br 4654  df-opab 4713  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895

This theorem is referenced by:  nfiso  6572  nfsum1  14420  nfsum  14421  nfcprod1  14640  nfcprod  14641  fsumiunle  29575  esumiun  30156  wessf1ornlem  39371  stoweidlem35  40252