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Theorem nfsup 9427
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 9420 . 2 sup(𝐴, 𝐵, 𝑅) = ∪ (𝐵 ∖ ((◡𝑅 “ 𝐴) ∪ (𝑅 “ (𝐵 ∖ (◡𝑅 “ 𝐴)))))
2 nfsup.2 . . . 4 Ⅎ𝑥𝐵
3 nfsup.3 . . . . . . 7 Ⅎ𝑥𝑅
43nfcnv 5856 . . . . . 6 Ⅎ𝑥◡𝑅
5 nfsup.1 . . . . . 6 Ⅎ𝑥𝐴
64, 5nfima 6062 . . . . 5 Ⅎ𝑥(◡𝑅 “ 𝐴)
72, 6nfdif 4077 . . . . . 6 Ⅎ𝑥(𝐵 ∖ (◡𝑅 “ 𝐴))
83, 7nfima 6062 . . . . 5 Ⅎ𝑥(𝑅 “ (𝐵 ∖ (◡𝑅 “ 𝐴)))
96, 8nfun 4117 . . . 4 Ⅎ𝑥((◡𝑅 “ 𝐴) ∪ (𝑅 “ (𝐵 ∖ (◡𝑅 “ 𝐴))))
102, 9nfdif 4077 . . 3 Ⅎ𝑥(𝐵 ∖ ((◡𝑅 “ 𝐴) ∪ (𝑅 “ (𝐵 ∖ (◡𝑅 “ 𝐴)))))
1110nfuni 4874 . 2 Ⅎ𝑥∪ (𝐵 ∖ ((◡𝑅 “ 𝐴) ∪ (𝑅 “ (𝐵 ∖ (◡𝑅 “ 𝐴)))))
121, 11nfcxfr 2921 1 Ⅎ𝑥sup(𝐴, 𝐵, 𝑅)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  Ⅎwnfc 2908   ∖ cdif 3896   ∪ cun 3897  ∪ cuni 4867  ◡ccnv 5650   “ cima 5654  supcsup 9416
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2213  ax-ext 2733  ax-sep 5249  ax-pr 5391
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2100  df-clab 2740  df-cleq 2753  df-clel 2836  df-nfc 2910  df-ral 3078  df-rex 3088  df-rab 3414  df-v 3453  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-nul 4280  df-if 4483  df-sn 4585  df-pr 4587  df-op 4591  df-uni 4868  df-br 5104  df-opab 5168  df-xp 5657  df-cnv 5659  df-dm 5661  df-rn 5662  df-res 5663  df-ima 5664  df-sup 9418
This theorem is used by:  nfinf  9459  itg2cnlem1  26062  esum2d  34707  nfwlim  36554  totbndbnd  38691  aomclem8  44021  binomcxplemdvbinom  45296  binomcxplemdvsum  45298  binomcxplemnotnn0  45299  ssfiunibd  46268  uzub  46385  limsupubuz  46667  fourierdlem20  47081  fourierdlem31  47092  fourierdlem79  47139  sge0ltfirp  47354  pimdecfgtioc  47669  decsmflem  47720  smfsup  47768  smfsupxr  47770  smflimsup  47782
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