Theorem nfsup 9492

Description: Hypothesis builder for supremum. (Contributed by Mario Carneiro, 20-Mar-2014.)

Hypotheses

Ref	Expression
nfsup.1	⊢ Ⅎ𝑥𝐴
nfsup.2	⊢ Ⅎ𝑥𝐵
nfsup.3	⊢ Ⅎ𝑥𝑅

Assertion

Ref	Expression
nfsup	⊢ Ⅎ𝑥sup(𝐴, 𝐵, 𝑅)

Proof of Theorem nfsup

Step	Hyp	Ref	Expression
1		dfsup2 9485	. 2 ⊢ sup(𝐴, 𝐵, 𝑅) = ∪ (𝐵 ∖ ((◡𝑅 “ 𝐴) ∪ (𝑅 “ (𝐵 ∖ (◡𝑅 “ 𝐴)))))
2		nfsup.2	. . . 4 ⊢ Ⅎ𝑥𝐵
3		nfsup.3	. . . . . . 7 ⊢ Ⅎ𝑥𝑅
4	3	nfcnv 5888	. . . . . 6 ⊢ Ⅎ𝑥◡𝑅
5		nfsup.1	. . . . . 6 ⊢ Ⅎ𝑥𝐴
6	4, 5	nfima 6085	. . . . 5 ⊢ Ⅎ𝑥(◡𝑅 “ 𝐴)
7	2, 6	nfdif 4128	. . . . . 6 ⊢ Ⅎ𝑥(𝐵 ∖ (◡𝑅 “ 𝐴))
8	3, 7	nfima 6085	. . . . 5 ⊢ Ⅎ𝑥(𝑅 “ (𝐵 ∖ (◡𝑅 “ 𝐴)))
9	6, 8	nfun 4169	. . . 4 ⊢ Ⅎ𝑥((◡𝑅 “ 𝐴) ∪ (𝑅 “ (𝐵 ∖ (◡𝑅 “ 𝐴))))
10	2, 9	nfdif 4128	. . 3 ⊢ Ⅎ𝑥(𝐵 ∖ ((◡𝑅 “ 𝐴) ∪ (𝑅 “ (𝐵 ∖ (◡𝑅 “ 𝐴)))))
11	10	nfuni 4913	. 2 ⊢ Ⅎ𝑥∪ (𝐵 ∖ ((◡𝑅 “ 𝐴) ∪ (𝑅 “ (𝐵 ∖ (◡𝑅 “ 𝐴)))))
12	1, 11	nfcxfr 2902	1 ⊢ Ⅎ𝑥sup(𝐴, 𝐵, 𝑅)

Syntax hints:  Ⅎwnfc 2889   ∖ cdif 3947   ∪ cun 3948  ∪ cuni 4906  ^◡ccnv 5683   “ cima 5687  supcsup 9481

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1794  ax-4 1808  ax-5 1909  ax-6 1966  ax-7 2006  ax-8 2109  ax-9 2117  ax-10 2140  ax-11 2156  ax-12 2176  ax-ext 2707  ax-sep 5295  ax-nul 5305  ax-pr 5431

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1779  df-nf 1783  df-sb 2064  df-clab 2714  df-cleq 2728  df-clel 2815  df-nfc 2891  df-ral 3061  df-rex 3070  df-rab 3436  df-v 3481  df-dif 3953  df-un 3955  df-in 3957  df-ss 3967  df-nul 4333  df-if 4525  df-sn 4626  df-pr 4628  df-op 4632  df-uni 4907  df-br 5143  df-opab 5205  df-xp 5690  df-cnv 5692  df-dm 5694  df-rn 5695  df-res 5696  df-ima 5697  df-sup 9483

This theorem is referenced by:  nfinf  9523  itg2cnlem1  25797  esum2d  34095  nfwlim  35824  totbndbnd  37797  aomclem8  43078  binomcxplemdvbinom  44377  binomcxplemdvsum  44379  binomcxplemnotnn0  44380  ssfiunibd  45326  uzub  45447  limsupubuz  45733  fourierdlem20  46147  fourierdlem31  46158  fourierdlem79  46205  sge0ltfirp  46420  pimdecfgtioc  46735  decsmflem  46786  smfsup  46834  smfsupxr  46836  smflimsup  46848