Theorem nfsup 9366

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 9359	. 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 5835	. . . . . 6 ⊢ Ⅎ𝑥◡𝑅
5		nfsup.1	. . . . . 6 ⊢ Ⅎ𝑥𝐴
6	4, 5	nfima 6035	. . . . 5 ⊢ Ⅎ𝑥(◡𝑅 “ 𝐴)
7	2, 6	nfdif 4083	. . . . . 6 ⊢ Ⅎ𝑥(𝐵 ∖ (◡𝑅 “ 𝐴))
8	3, 7	nfima 6035	. . . . 5 ⊢ Ⅎ𝑥(𝑅 “ (𝐵 ∖ (◡𝑅 “ 𝐴)))
9	6, 8	nfun 4124	. . . 4 ⊢ Ⅎ𝑥((◡𝑅 “ 𝐴) ∪ (𝑅 “ (𝐵 ∖ (◡𝑅 “ 𝐴))))
10	2, 9	nfdif 4083	. . 3 ⊢ Ⅎ𝑥(𝐵 ∖ ((◡𝑅 “ 𝐴) ∪ (𝑅 “ (𝐵 ∖ (◡𝑅 “ 𝐴)))))
11	10	nfuni 4872	. 2 ⊢ Ⅎ𝑥∪ (𝐵 ∖ ((◡𝑅 “ 𝐴) ∪ (𝑅 “ (𝐵 ∖ (◡𝑅 “ 𝐴)))))
12	1, 11	nfcxfr 2897	1 ⊢ Ⅎ𝑥sup(𝐴, 𝐵, 𝑅)

Syntax hints:  Ⅎwnfc 2884   ∖ cdif 3900   ∪ cun 3901  ∪ cuni 4865  ^◡ccnv 5631   “ cima 5635  supcsup 9355

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 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2185  ax-ext 2709  ax-sep 5243  ax-pr 5379

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-clab 2716  df-cleq 2729  df-clel 2812  df-nfc 2886  df-ral 3053  df-rex 3063  df-rab 3402  df-v 3444  df-dif 3906  df-un 3908  df-in 3910  df-ss 3920  df-nul 4288  df-if 4482  df-sn 4583  df-pr 4585  df-op 4589  df-uni 4866  df-br 5101  df-opab 5163  df-xp 5638  df-cnv 5640  df-dm 5642  df-rn 5643  df-res 5644  df-ima 5645  df-sup 9357

This theorem is referenced by:  nfinf  9398  itg2cnlem1  25730  esum2d  34270  nfwlim  36033  totbndbnd  38034  aomclem8  43412  binomcxplemdvbinom  44703  binomcxplemdvsum  44705  binomcxplemnotnn0  44706  ssfiunibd  45665  uzub  45783  limsupubuz  46065  fourierdlem20  46479  fourierdlem31  46490  fourierdlem79  46537  sge0ltfirp  46752  pimdecfgtioc  47067  decsmflem  47118  smfsup  47166  smfsupxr  47168  smflimsup  47180