Theorem nfsup 8899

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 8892	. 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 5713	. . . . . 6 ⊢ Ⅎ𝑥◡𝑅
5		nfsup.1	. . . . . 6 ⊢ Ⅎ𝑥𝐴
6	4, 5	nfima 5904	. . . . 5 ⊢ Ⅎ𝑥(◡𝑅 “ 𝐴)
7	2, 6	nfdif 4053	. . . . . 6 ⊢ Ⅎ𝑥(𝐵 ∖ (◡𝑅 “ 𝐴))
8	3, 7	nfima 5904	. . . . 5 ⊢ Ⅎ𝑥(𝑅 “ (𝐵 ∖ (◡𝑅 “ 𝐴)))
9	6, 8	nfun 4092	. . . 4 ⊢ Ⅎ𝑥((◡𝑅 “ 𝐴) ∪ (𝑅 “ (𝐵 ∖ (◡𝑅 “ 𝐴))))
10	2, 9	nfdif 4053	. . 3 ⊢ Ⅎ𝑥(𝐵 ∖ ((◡𝑅 “ 𝐴) ∪ (𝑅 “ (𝐵 ∖ (◡𝑅 “ 𝐴)))))
11	10	nfuni 4807	. 2 ⊢ Ⅎ𝑥∪ (𝐵 ∖ ((◡𝑅 “ 𝐴) ∪ (𝑅 “ (𝐵 ∖ (◡𝑅 “ 𝐴)))))
12	1, 11	nfcxfr 2953	1 ⊢ Ⅎ𝑥sup(𝐴, 𝐵, 𝑅)

Syntax hints:  Ⅎwnfc 2936   ∖ cdif 3878   ∪ cun 3879  ∪ cuni 4800  ^◡ccnv 5518   “ cima 5522  supcsup 8888

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2113  ax-9 2121  ax-10 2142  ax-11 2158  ax-12 2175  ax-ext 2770  ax-sep 5167  ax-nul 5174  ax-pr 5295

This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3an 1086  df-tru 1541  df-ex 1782  df-nf 1786  df-sb 2070  df-mo 2598  df-eu 2629  df-clab 2777  df-cleq 2791  df-clel 2870  df-nfc 2938  df-ral 3111  df-rex 3112  df-rab 3115  df-v 3443  df-dif 3884  df-un 3886  df-in 3888  df-ss 3898  df-nul 4244  df-if 4426  df-sn 4526  df-pr 4528  df-op 4532  df-uni 4801  df-br 5031  df-opab 5093  df-xp 5525  df-cnv 5527  df-dm 5529  df-rn 5530  df-res 5531  df-ima 5532  df-sup 8890

This theorem is referenced by:  nfinf  8930  itg2cnlem1  24365  esum2d  31462  nfwlim  33222  totbndbnd  35227  aomclem8  40005  binomcxplemdvbinom  41057  binomcxplemdvsum  41059  binomcxplemnotnn0  41060  ssfiunibd  41941  uzub  42068  limsupubuz  42355  fourierdlem20  42769  fourierdlem31  42780  fourierdlem79  42827  sge0ltfirp  43039  pimdecfgtioc  43350  decsmflem  43399  smfsup  43445  smfsupxr  43447  smflimsup  43459