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Theorem nfsup 9446
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
StepHypRef Expression
1 dfsup2 9439 . 2 sup(𝐴, 𝐵, 𝑅) = ∪ (𝐵 ∖ ((◡𝑅 “ 𝐴) ∪ (𝑅 “ (𝐵 ∖ (◡𝑅 “ 𝐴)))))
2 nfsup.2 . . . 4 Ⅎ𝑥𝐵
3 nfsup.3 . . . . . . 7 Ⅎ𝑥𝑅
43nfcnv 5855 . . . . . 6 Ⅎ𝑥◡𝑅
5 nfsup.1 . . . . . 6 Ⅎ𝑥𝐴
64, 5nfima 6063 . . . . 5 Ⅎ𝑥(◡𝑅 “ 𝐴)
72, 6nfdif 4066 . . . . . 6 Ⅎ𝑥(𝐵 ∖ (◡𝑅 “ 𝐴))
83, 7nfima 6063 . . . . 5 Ⅎ𝑥(𝑅 “ (𝐵 ∖ (◡𝑅 “ 𝐴)))
96, 8nfun 4169 . . . 4 Ⅎ𝑥((◡𝑅 “ 𝐴) ∪ (𝑅 “ (𝐵 ∖ (◡𝑅 “ 𝐴))))
102, 9nfdif 4066 . . 3 Ⅎ𝑥(𝐵 ∖ ((◡𝑅 “ 𝐴) ∪ (𝑅 “ (𝐵 ∖ (◡𝑅 “ 𝐴)))))
1110nfuni 4873 . 2 Ⅎ𝑥∪ (𝐵 ∖ ((◡𝑅 “ 𝐴) ∪ (𝑅 “ (𝐵 ∖ (◡𝑅 “ 𝐴)))))
121, 11nfcxfr 2920 1 Ⅎ𝑥sup(𝐴, 𝐵, 𝑅)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  Ⅎwnfc 2907   ∖ cdif 4045   ∪ cun 4149  ∪ cuni 4866  ◡ccnv 5649   “ cima 5653  supcsup 9435
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1827  ax-4 1841  ax-5 1942  ax-6 1999  ax-7 2040  ax-8 2146  ax-9 2154  ax-10 2177  ax-11 2193  ax-12 2212  ax-ext 2732  ax-sep 5248  ax-pr 5390
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1572  df-fal 1582  df-ex 1812  df-nf 1816  df-sb 2099  df-clab 2739  df-cleq 2752  df-clel 2835  df-nfc 2909  df-ral 3077  df-rex 3087  df-rab 3413  df-v 3452  df-ss 3896  df-dif 4047  df-in 4091  df-un 4151  df-nul 4279  df-if 4482  df-sn 4585  df-pr 4587  df-op 4835  df-uni 4867  df-br 5103  df-opab 5167  df-xp 5656  df-cnv 5658  df-dm 5660  df-rn 5661  df-res 5662  df-ima 5663  df-sup 9437
This theorem is used by:  nfinf  9478  itg2cnlem1  26087  esum2d  34771  nfwlim  36676  totbndbnd  38816  aomclem8  44156  binomcxplemdvbinom  45430  binomcxplemdvsum  45432  binomcxplemnotnn0  45433  ssfiunibd  46418  uzub  46534  limsupubuz  46816  fourierdlem20  47230  fourierdlem31  47241  fourierdlem79  47288  sge0ltfirp  47503  pimdecfgtioc  47818  decsmflem  47869  smfsup  47917  smfsupxr  47919  smflimsup  47931
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